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151.

Let f(x)=sinx,g(x)=loge|x|. If the ranges of the composite functions fog and gof are R1 and R2 respectively, then

Answer»

Let f(x)=sinx,g(x)=loge|x|. If the ranges of the composite functions fog and gof are R1 and R2 respectively, then

152.

In ΔABC, right angled at B. If, find the value of(i) sin A cos C + cos A sin C(ii) cos A cos C − sin A sin C

Answer»

In ΔABC, right angled at B. If, find the value of



(i) sin A cos C + cos A sin C



(ii) cos A cos C − sin A sin C

153.

Let f:R→R be a continuously differentiable function such that f(2)=6 and f′(2)=148.If f(x)∫64t3 dt=(x−2)g(x), then limx→2 g(x) is equal to

Answer»

Let f:RR be a continuously differentiable function such that f(2)=6 and f(2)=148.

If f(x)64t3 dt=(x2)g(x), then limx2 g(x) is equal to

154.

∫xx4−1dx=

Answer»

xx41dx=

155.

The equation of circle touching the line 2x+3y+1=0 at (1,−1) and cutting orthogonally the circle having line segment joining (0,3) and (−2,−1) as diameter is

Answer»

The equation of circle touching the line 2x+3y+1=0 at (1,1) and cutting orthogonally the circle having line segment joining (0,3) and (2,1) as diameter is

156.

Suppose a2=5a−8 and b2=5b−8, then equation whose roots are ab and ba is

Answer»

Suppose a2=5a8 and b2=5b8, then equation whose roots are ab and ba is


157.

If R is the set of all real numbers and Q is the set of all rational numbers then what is the set (R-Q) ?

Answer»

If R is the set of all real numbers and Q is the set of all rational numbers then what is the set (R-Q) ?

158.

Which of these is the shape of graph of y=x2−2x+5.

Answer»

Which of these is the shape of graph of y=x22x+5.


159.

The number of all possible values of θ,where0<θ<π, for which the system of equations (y+z)cos3θ=(xyz)sin3θ xsin3θ=2cos3θy+2sin3θz(xyz)sin3θ=(y+2z)cos3θ+ysin3θ have a solution (x0,y0,z0)withy0z0≠0 is___

Answer»

The number of all possible values of θ,where0<θ<π, for which the system of equations (y+z)cos3θ=(xyz)sin3θ
xsin3θ=2cos3θy+2sin3θz(xyz)sin3θ=(y+2z)cos3θ+ysin3θ
have a solution (x0,y0,z0)withy0z00 is___

160.

Write Minors and Cofactors of the elements of following determinants: (i) (ii)

Answer» Write Minors and Cofactors of the elements of following determinants: (i) (ii)
161.

The value of limx→∞(√3x2+√3x2+√3x2−√3x2)is k. Then the value of 2k is

Answer» The value of limx(3x2+3x2+3x23x2)is k. Then the value of 2k is
162.

Write the order of the differential equation: log(d2ydx2)=(dydx)3+x.

Answer» Write the order of the differential equation:
log(d2ydx2)=(dydx)3+x.
163.

∫10 x sin−1x dx=

Answer» 10 x sin1x dx=
164.

19. If vector a b c and d are non coplanar vectors , then d.{ax[bx(cxd)]} is equal to ?

Answer» 19. If vector a b c and d are non coplanar vectors , then d.{ax[bx(cxd)]} is equal to ?
165.

9. What are the roots of 9xsquare+2x-3=0 with solution

Answer» 9. What are the roots of 9xsquare+2x-3=0 with solution
166.

Let set R={P:B⊆P⊆A}. If A={1, 2, 3, 4, 5} and B={1, 2}, then the number of elements in set R is

Answer»

Let set R={P:BPA}. If A={1, 2, 3, 4, 5} and B={1, 2}, then the number of elements in set R is

167.

33.Prove that cos(3/4+x)-cos(3/4-x)=2sin x

Answer» 33.Prove that cos(3/4+x)-cos(3/4-x)=2sin x
168.

cos68o cos8o + sin68o sin8o =?

Answer»

cos68o cos8o + sin68o sin8o =?


169.

If matrix A is a square matrix, then the possible number of elements in A is

Answer»

If matrix A is a square matrix, then the possible number of elements in A is

170.

Graph of f(x) is given. Draw the graph of f−1(x)

Answer»

Graph of f(x) is given. Draw the graph of f1(x)




171.

Let y=y(x) be the solution of the differential equation xdy–ydx=√(x2−y2)dx, x≥1, with y(1)=0. If the area bounded by the line x=1,x=eπ,y=0 and y=y(x) is αe2π+b, then the value of 10(α+β) is equal to

Answer» Let y=y(x) be the solution of the differential equation xdyydx=(x2y2)dx, x1, with y(1)=0. If the area bounded by the line x=1,x=eπ,y=0 and y=y(x) is αe2π+b, then the value of 10(α+β) is equal to
172.

Prove that:sin 4x=4 sin x cos3x-4 cos x sin3 x

Answer» Prove that:

sin 4x=4 sin x cos3x-4 cos x sin3 x
173.

18 guests have to be seated , half on each side of a long table.4 particular guests desire to sit on 1 particular side and 3 others on the other side .Deter Dete the number of ways in which the sitting arrangement can be done.

Answer»

18 guests have to be seated , half on each side of a long table.4 particular guests desire to sit on 1 particular side and 3 others on the other side .Deter Dete the number of ways in which the sitting arrangement can be done.

174.

Area under the circle x2 + y2 = 16 is

Answer»

Area under the circle x2 + y2 = 16 is


175.

The value of k (k&gt;0) such that the length of the longest interval in which the function f(x)=sin−1(|sinkx|)+cos−1(coskx) is constant is π4 will be

Answer» The value of k (k>0) such that the length of the longest interval in which the function f(x)=sin1(|sinkx|)+cos1(coskx) is constant is π4 will be
176.

∫10x1+√xdx=

Answer» 10x1+xdx=
177.

The resultant of P and Q is R. If Q is doubled, R is also doubled and if Q is reversed, R is again doubled. Then, P2:Q2:R2 given by

Answer»

The resultant of P and Q is R. If Q is doubled, R is also doubled and if Q is reversed, R is again doubled. Then, P2:Q2:R2 given by

178.

The following pie chart gives the distribution of constituents in the human body. The central angle of the part showing the distribution of protein and dry elements is

Answer» The following pie chart gives the distribution of constituents in the human body. The central angle of the part showing the distribution of protein and dry elements is


179.

Find the set of values of m for which exactly one root of the equation x2+mx+(m2+6m)=0 lie in (−2,0)

Answer»

Find the set of values of m for which exactly one root of the equation x2+mx+(m2+6m)=0 lie in (2,0)

180.

If sin xy+yx=x2-y2, find dydx

Answer» If sin xy+yx=x2-y2, find dydx
181.

If P(2)=0 and P′(x)+20P(x)&lt;0 for all x&gt;0.Then the number of solution(s) for P(x)=1 for x&gt;2, is

Answer» If P(2)=0 and P(x)+20P(x)<0 for all x>0.Then the number of solution(s) for P(x)=1 for x>2, is


182.

π/4∫0esec2xsin xcos3xdx equals

Answer» π/40esec2xsin xcos3xdx equals
183.

6. 2x-3y 6

Answer» 6. 2x-3y 6
184.

The set of points where the function f(x)=x+1,x&lt;22x-1,x≥2is not differentiable, is ____________.

Answer» The set of points where the function f(x)=x+1,x<22x-1,x2is not differentiable, is ____________.
185.

The equation of the circle which passes through the focus of the parabola x2=4y and touches it at (6, 9) is

Answer»

The equation of the circle which passes through the focus of the parabola x2=4y and touches it at (6, 9) is

186.

If |z1|=2,|z2|=3, then the maximum value of |z1+z2+5+12i| is

Answer» If |z1|=2,|z2|=3, then the maximum value of |z1+z2+5+12i| is
187.

Given x > 0, the value of fx=–3 cos3+x+x2 lie in the interval ____________.

Answer» Given x > 0, the value of fx=3 cos3+x+x2 lie in the interval ____________.
188.

The value of limz→4√z−2z−4 is

Answer»

The value of limz4z2z4 is

189.

If for a triangle ABC,∣∣∣∣abcbcacab∣∣∣∣=0then sin3A+sin3B+sin3C=

Answer»

If for a triangle ABC,


abcbcacab
=0


then sin3A+sin3B+sin3C=

190.

Which of the following is/are quadratic equation?

Answer»

Which of the following is/are quadratic equation?

191.

b cos B+c cos C=a cos (B−C)

Answer»

b cos B+c cos C=a cos (BC)

192.

If the distance between the foci of an ellipse is 6 and the distance between its directrices is 12, then the length of its latus rectum is

Answer»

If the distance between the foci of an ellipse is 6 and the distance between its directrices is 12, then the length of its latus rectum is

193.

If 1+2+22+23+…+21999 is divided by 5, then the remainder is

Answer»

If 1+2+22+23++21999 is divided by 5, then the remainder is

194.

The solutions of the equation z2+|z|=0 are

Answer»

The solutions of the equation z2+|z|=0 are

195.

If x = a (θ + sin θ), y = a (1 + cos θ), prove that d2ydx2=-ay2.

Answer» If x = a (θ + sin θ), y = a (1 + cos θ), prove that d2ydx2=-ay2.
196.

if a+b+c=5 ab+bc+ca=8 then find a^3+b^3+c^3-3abc

Answer» if a+b+c=5 ab+bc+ca=8 then find a^3+b^3+c^3-3abc
197.

Consider a right angled triangle ABC If the sides of the triangle are a=6,b=10,c=8 units, then the distance between incentre and circumcentre will be

Answer»

Consider a right angled triangle ABC


If the sides of the triangle are a=6,b=10,c=8 units, then the distance between incentre and circumcentre will be

198.

Give an example of a skew symmetric matrix of order 3.

Answer» Give an example of a skew symmetric matrix of order 3.
199.

148.The component of vector 2i-3j+2k perpendicular to i+j+k is?

Answer» 148.The component of vector 2i-3j+2k perpendicular to i+j+k is?
200.

Let f(x)=|x−2| and g(x)=f(f(x)), x∈[0,4]. Then ∫30(g(x)−f(x))dx equal to

Answer»

Let f(x)=|x2| and g(x)=f(f(x)), x[0,4]. Then 30(g(x)f(x))dx equal to