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9601.

Find the equation to the ellipse (referred to its axes as the axes of x and y respectively) which passes through the point(-3,1) and has eccentricity √25.

Answer»

Find the equation to the ellipse (referred to its axes as the axes of x and y respectively) which passes through the point(-3,1) and has eccentricity 25.

9602.

33.For A body moving in a straight line the position (x) as a function of time(t) is given as x = 3 - 6t + t where X is in metre and time t is in second. distance covered by the body in first 6 seconds is 1. 0 m 2. 9m 3. 18m 4. 12 m

Answer» 33.For A body moving in a straight line the position (x) as a function of time(t) is given as x = 3 - 6t + t where X is in metre and time t is in second. distance covered by the body in first 6 seconds is 1. 0 m 2. 9m 3. 18m 4. 12 m
9603.

Find the real numbers x and y if ( x – iy ) (3 + 5 i ) is the conjugate of –6 – 24 i .

Answer» Find the real numbers x and y if ( x – iy ) (3 + 5 i ) is the conjugate of –6 – 24 i .
9604.

The sine of the angle between the straight line x-23=y-34=z-45 and the plane 2x-2y+z=5 is (a) 1065(b) 452(c) 235(d) 210

Answer» The sine of the angle between the straight line x-23=y-34=z-45 and the plane 2x-2y+z=5 is

(a) 1065



(b) 452



(c) 235



(d) 210
9605.

limn→∞[1n+1+1n+2+⋯1n+n] is equal to

Answer» limn[1n+1+1n+2+1n+n] is equal to
9606.

Find the domain of each of the following real valued functions of real variable : (i) f(x)=1x (ii) f(x)=1x−7 (iii) f(x)=3x−2x+1 (iv) f(x)=2x+1x2−9 (v) f(x)=x2+2x+1x2−8x+12

Answer»

Find the domain of each of the following real valued functions of real variable :
(i) f(x)=1x
(ii) f(x)=1x7
(iii) f(x)=3x2x+1
(iv) f(x)=2x+1x29
(v) f(x)=x2+2x+1x28x+12

9607.

The number of points belonging to the set A={(2,−4),(5,−4),(4,−5),(1,−3),(2,−11),(2,−5)} lying inside the circle x2+y2−4x+12y+15=0 and below the line 2x−3y=16, is

Answer» The number of points belonging to the set A={(2,4),(5,4),(4,5),(1,3),(2,11),(2,5)} lying inside the circle x2+y24x+12y+15=0 and below the line 2x3y=16, is
9608.

For real numbers x and y, the relation f satisfies f(xy) = f(x).f(y) and f(0)≠0. Find the value of f(2019).

Answer» For real numbers x and y, the relation f satisfies f(xy) = f(x).f(y) and f(0)≠0. Find the value of f(2019).
9609.

sinx=2t1+t2, tany=2t1-t2, find dydx

Answer» sinx=2t1+t2, tany=2t1-t2, find dydx
9610.

(i) Draw the graph (straight line) given by equation x − 3y = 18.(ii) If the straight line drawn passes through the points (m,−5) and (6,n); find the values of m and n.(iii) Also find the area of the triangle formed by the graph of line and both the axis.

Answer» (i) Draw the graph (straight line) given by equation x − 3y = 18.



(ii) If the straight line drawn passes through the points (m,−5) and (6,n); find the values of m and n.



(iii) Also find the area of the triangle formed by the graph of line and both the axis.
9611.

If the lines x=ay+b,z=cy+d and x=a′z+b′,y=c′z+d′ are perpendicular, then :

Answer»

If the lines x=ay+b,z=cy+d and x=az+b,y=cz+d are perpendicular, then :

9612.

If the area of the triangle formed by the lines y=x, x+y=2 and the line through P(h,k) and parallel to x-axis is 4h2, the locus of P can be

Answer»

If the area of the triangle formed by the lines y=x, x+y=2 and the line through P(h,k) and parallel to x-axis is 4h2, the locus of P can be


9613.

A car will hold two persons in the front seat and 1 in the rear seat. If among six persons only two can drive, the number of ways, in which the car can be filled is :

Answer»

A car will hold two persons in the front seat and 1 in the rear seat. If among six persons only two can drive, the number of ways, in which the car can be filled is :

9614.

If the polar coordinates of a point are (6,π3), then the Cartesian coordinates are

Answer»

If the polar coordinates of a point are (6,π3), then the Cartesian coordinates are

9615.

If y=y(x) is the solution of the differential equation 5+ex2+y⋅dydx+ex=0 satisfying y(0)=1, then a value of y(loge13) is:

Answer»

If y=y(x) is the solution of the differential equation 5+ex2+ydydx+ex=0 satisfying y(0)=1, then a value of y(loge13) is:

9616.

Evaluate the following integrals:∫14x-1+x-2+x-4 dx

Answer» Evaluate the following integrals:

14x-1+x-2+x-4 dx
9617.

15. Vx(3x +2x + 3) dx

Answer» 15. Vx(3x +2x + 3) dx
9618.

Solve each of the following system of equation in R. ∣∣x+13∣∣>83

Answer»

Solve each of the following system of equation in R.

x+13>83

9619.

Consider the following information regarding the number of men and women workers in three factories I,II and III Men Workers Women Workers I 30 25 II 25 31 III 27 26 Represent the above information in the form of a 3×2 matrix. What does the entry in the third row and second column represent?

Answer» Consider the following information regarding the number of men and women workers in three factories I,II and III























Men Workers Women Workers
I 30 25
II 25 31
III 27 26



Represent the above information in the form of a 3×2 matrix. What does the entry in the third row and second column represent?
9620.

Find the domain and range of each of the following real valued functions:(i) fx=ax+bbx-a(ii) fx=ax-bcx-d(iii) fx=x-1(iv) fx=x-3(v) fx=x-22-x(vi) fx=x-1(vii) fx=-x(viii) fx=9-x2(ix) fx=116-x2(x) fx=x2-16

Answer» Find the domain and range of each of the following real valued functions:



(i) fx=ax+bbx-a



(ii) fx=ax-bcx-d



(iii) fx=x-1



(iv) fx=x-3



(v) fx=x-22-x



(vi) fx=x-1



(vii) fx=-x



(viii) fx=9-x2



(ix) fx=116-x2



(x) fx=x2-16
9621.

Rearrange the following sentences (A), (B), (C), (D), (E) and (F) to make a meaningful paragraph and answer the questions which follow: (A) However while reading they would not know when to pause and what to emphasize. (B) Since then their use has been regularized and the punctuation rule have been followed by all. (C) In earlier days, people learnt by reading out loud. (D) But not everybody used the same punctuations for the same thing (E) To address this problem, various signs depicting various punctuations were introduced. (F) Thus firmer guidelines regarding punctuations were framed so that everyone used them in similar way. Which of the following sentences should be the SIXTH (LAST) after rearrangement?

Answer»

Rearrange the following sentences (A), (B), (C), (D), (E) and (F) to make a meaningful paragraph and answer the questions which follow:

(A) However while reading they would not know when to pause and what to emphasize.
(B) Since then their use has been regularized and the punctuation rule have been followed by all.
(C) In earlier days, people learnt by reading out loud.
(D) But not everybody used the same punctuations for the same thing
(E) To address this problem, various signs depicting various punctuations were introduced.
(F) Thus firmer guidelines regarding punctuations were framed so that everyone used them in similar way.

Which of the following sentences should be the SIXTH (LAST) after rearrangement?
9622.

The set of all real numbers x for which x2−|x+2|+x>0, is

Answer»

The set of all real numbers x for which x2|x+2|+x>0, is


9623.

If x[21]+y[35]+[−8−11]=O, then

Answer»

If x[21]+y[35]+[811]=O, then

9624.

If the value of x is so small that x2 and greater powers can be neglected, then √1+x+3√(1−x)21+x+√1+x is equal to

Answer»

If the value of x is so small that x2 and greater powers can be neglected, then 1+x+3(1x)21+x+1+x is equal to

9625.

The focus and vertex of a parabola are (4,5) and (3,6). The equation of axis is

Answer»

The focus and vertex of a parabola are (4,5) and (3,6). The equation of axis is


9626.

22. x*(5sinx - 3cosx)

Answer» 22. x*(5sinx - 3cosx)
9627.

It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?

Answer» It is known that 10% of certain articles manufactured are defective. What is the probability that in a random sample of 12 such articles, 9 are defective?
9628.

If Sn=cot−1(3)+cot−1(7)+cot−1(13)+cot−1(21)+…n terms, then

Answer»

If Sn=cot1(3)+cot1(7)+cot1(13)+cot1(21)+n terms, then

9629.

∫e2xsin3x dx is equal to( where C is the constant of integration)

Answer» e2xsin3x dx is equal to

( where C is the constant of integration)
9630.

Let a vector →a be coplanar with vectors →b=2^i+^j+^k and →c=^i−^j+^k. If →a is perpendicular to →d=3^i+2^j+6^k, and |→a|=√10. Then a possible value of [→a →b →c]+[→a →b →d]+[→a →c →d] is equal to

Answer»

Let a vector a be coplanar with vectors b=2^i+^j+^k and c=^i^j+^k. If a is perpendicular to d=3^i+2^j+6^k, and |a|=10. Then a possible value of [a b c]+[a b d]+[a c d] is equal to

9631.

A semi-circle of diameter 1 unit sits at the top of a semi-circle of diameter 2 units. The shaded region inside the smaller semi-circle but outside the larger semi-circle is called a lune. The area of the lune is.

Answer»

A semi-circle of diameter 1 unit sits at the top of a semi-circle of diameter 2 units. The shaded region inside the smaller semi-circle but outside the larger semi-circle is called a lune. The area of the lune is.





9632.

If A is the area formed by the positive x axis, and the normal and tangent to the circle x2+y2=4at (1,√3) then the value of A/√3 is

Answer»

If A is the area formed by the positive x axis, and the normal and tangent to the circle x2+y2=4

at (1,3) then the value of A/3 is


9633.

Integrate the following functions. ∫(logx)2xdx.

Answer»

Integrate the following functions.
(logx)2xdx.

9634.

Let f(x)={2−x,x≤0x+1,x>0 and g(x)=⎧⎪⎨⎪⎩x+3, x<1 x2−2x−2,1≤x<2x−5, x≥2 . If g(f(x)) is continuous at x=0, then the value of g(f(0)) is

Answer»

Let f(x)={2x,x0x+1,x>0 and g(x)=x+3, x<1 x22x2,1x<2x5, x2 . If g(f(x)) is continuous at x=0, then the value of g(f(0)) is

9635.

The complete solution set of the inequality 11+lnx+11−lnx&gt;2 is

Answer»

The complete solution set of the inequality 11+lnx+11lnx>2 is

9636.

The mean deviation of the variates 40, 62, 68, 76, 54 from their arithmetic mean is

Answer»

The mean deviation of the variates 40, 62, 68, 76, 54 from their arithmetic mean is



9637.

The feasible region of an LPP is shown in the figure. If Z=8x+3y, then the minimum value of Z occurs at[1 mark]

Answer»

The feasible region of an LPP is shown in the figure. If Z=8x+3y, then the minimum value of Z occurs at





[1 mark]

9638.

Let f and g be two real functions given by f = {(10, 1), (2, 0), (3, −4), (4, 2), (5, 1)} and g = {(1, 0), (2, 2), (3, −1), (4, 4), (5, 3)}. Then the domain fg is given by __________ .

Answer» Let f and g be two real functions given by f = {(10, 1), (2, 0), (3, −4), (4, 2), (5, 1)} and g = {(1, 0), (2, 2), (3, −1), (4, 4), (5, 3)}. Then the domain fg is given by __________ .
9639.

Find the distance of the point P(3, 4, 4) from the point, where the line joining the points A(3, −4, −5) and B(2, −3, 1) intersects the plane 2x + y + z = 7. [CBSE 2015]

Answer» Find the distance of the point P(3, 4, 4) from the point, where the line joining the points A(3, −4, −5) and B(2, −3, 1) intersects the plane 2x + y + z = 7. [CBSE 2015]
9640.

Consider the function f : R → R, defined as ⎧⎪⎪⎪⎪⎪⎪⎨⎪⎪⎪⎪⎪⎪⎩x2−x+3,xϵ(−∞,3)∩Qx+a,xϵ(−∞,2)−Q2x+1,xϵ(2,3)−Q9 tan(π x12),xϵ[3,6] If f(x) is continuous at x = 2 then the value of a is

Answer»

Consider the function f : R R, defined as









x2x+3,xϵ(,3)Qx+a,xϵ(,2)Q2x+1,xϵ(2,3)Q9 tan(π x12),xϵ[3,6]

If f(x) is continuous at x = 2 then the value of a is


9641.

f(x)=(x/1-|x|) ^1/1996

Answer» f(x)=(x/1-|x|) ^1/1996
9642.

3.y=cos x + Cy, + sin x = 0

Answer» 3.y=cos x + Cy, + sin x = 0
9643.

If , then show that a , b , c and d are in G.P.

Answer» If , then show that a , b , c and d are in G.P.
9644.

If }5\operatorname{cos}x+12\operatorname{sin}x=k, then number of integra } values of }k is } (1) 13 (2) 14 (3) 27 (4) 26

Answer» If }5\operatorname{cos}x+12\operatorname{sin}x=k, then number of integra } values of }k is } (1) 13 (2) 14 (3) 27 (4) 26
9645.

If one end point of the focal chord of the parabola y2=4ax is (1,2), then second end point lies on

Answer»

If one end point of the focal chord of the parabola y2=4ax is (1,2), then second end point lies on

9646.

If a curve is represented parametrically by the equations x=f(t) and y=g(t), then (d2ydx2)(d2xdy2) is equal to(where f′(t)≠0 and g′(t)≠0)

Answer»

If a curve is represented parametrically by the equations x=f(t) and y=g(t), then (d2ydx2)(d2xdy2) is equal to

(where f(t)0 and g(t)0)

9647.

If ∫√(x−1)(2−x)dx=y4−116sin4y+C, then which of the following(s) can not be the value(s) of y.(Where C is integration constant)

Answer»

If (x1)(2x)dx=y4116sin4y+C, then which of the following(s) can not be the value(s) of y.

(Where C is integration constant)

9648.

If 18!+19!=x10!, find x.

Answer» If 18!+19!=x10!, find x.
9649.

The value of ∫sin7xcosxdx is(where C is constant of integration)

Answer»

The value of sin7xcosxdx is

(where C is constant of integration)

9650.

Let P and Q be 3×3 matrices with P≠Q. If P3=Q3 and P2Q=Q2P, then the determinant of (P2+Q2) is equal to

Answer»

Let P and Q be 3×3 matrices with PQ. If P3=Q3 and P2Q=Q2P, then the determinant of (P2+Q2) is equal to