InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 8651. |
Y= √(x-1)(x-3)(x+4) find its domain and range |
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| 8652. |
Question 15 of chapter 13 (limits and derivatives) exercise 13.1 |
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| 8653. |
Find Ranking (dictionary word) for VAISHU |
| Answer» 609th eank | |
| 8654. |
prove de morgan law ( A U B ) \' = ( A\' U B\' ) |
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| 8655. |
Whst is sets |
| Answer» Set is coleection of well defined objects<br>Sets are collection of well defined objects | |
| 8656. |
Find the derivative of (ax+b)(cx+d)*2 |
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| 8657. |
224 |
| Answer» What do you mean by 224 | |
| 8658. |
A triangle abc in which a line is drawn between 2 side of it if AD=8x+9,DC=x+3,EC=x&BE=3x+4 |
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| 8659. |
Find the square root of -15 -8i |
| Answer» Let {tex}x + yi = \\sqrt { - 15 - 8i} {/tex}Squaring both sides, we get(x + yi)2 = -15 - 8ix2 - y2 + 2xyi = -15 - 8iComparing the real and imaginary partsx2 - y2 = -15 .... (i){tex}2xy = - 8 \\Rightarrow xy = - 4{/tex}Now, we know that(x2 + y2)2 = (x2 - y2) + 4x2y2= (-15)2 + 4(-4)2= 225 + 64= 289{tex}\\therefore {x^2} + {y^2} = 17{/tex}\xa0..... (ii) [Neglecting (-) sign as x2 + y2 > 0]Solving (i) and (ii), we get{tex}x = \\pm 1{/tex}\xa0and {tex}y = \\pm 4{/tex}Since the sign of xy is (-){tex}\\therefore{/tex}\xa0x = 1, y = -4And x = -1, y = 4{tex}\\therefore \\sqrt { - 15 - 8i} = \\pm (1 - 4i){/tex}<br>Answer is 1-4i | |
| 8660. |
25° |
| Answer» 0 | |
| 8661. |
If tanA=3/4 find the value of A |
| Answer» tanA=3/4tanA=tan37° [tan37°=3/4]A=37° | |
| 8662. |
Please explain me how to solve a trigonometric problem using componendo and dividendo form!! |
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| 8663. |
Proof that cos(a+b)=cosa.cosb-sina.sinb |
| Answer» It\'s in ncert<br>See on RD sharma<br>It wont ask in exam just use "rattafication" And do questions based on this formula Memorize the cos(a+b) and cos(a-b) formula . Both formula are used for the derivation of other formulas. | |
| 8664. |
Find the modulus and argument of the complex - 1 - I root 3 |
| Answer» -1-root3=lzl=1squer+root3squer=. lzl=2. tan teatha =lroot3/1l=root3. tanteath=60. argument pie/3<br>It\'s not clear pls. Check again | |
| 8665. |
Solve 4x+3 is smaller than 6x+7. |
| Answer» 4x+3<6x+74x-6x<7-3-2x<4X>4/-2x>-2<br>4x+3<6x+7= 3-7<6x-4x= -4<2x= -4/2<br>4x+3smaller than 6x+7=4x-6x smaller than 7-3=-2xsmallerthan 4=x larger than 2 | |
| 8666. |
533211233334444444444446+55555677890065433221112334456678990 |
| Answer» Okay hai bhai used in Calcutta | |
| 8667. |
Find the square root of 9+40i |
| Answer» -3.32 is answer | |
| 8668. |
Convert it 16/1+iotaroot3 into polar form |
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| 8669. |
Why on multiplying any thing with zero gives ans. Zeros? |
| Answer» Ya | |
| 8670. |
Find the equation of the parabola which Focus (2,3) and the directrix is 3x-4y+5=0? |
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| 8671. |
Write set builder form of 1/8,2/11,3/16?? |
| Answer» { X : X = n / n^2 + 7 , n = 1,2 and 3 } | |
| 8672. |
A two digit number is 4 times the sum and three times the products of its digit. The number is |
| Answer» 24 | |
| 8673. |
Derivative of tan(3x+1)using 1st principle |
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| 8674. |
Miscellaneous chapter 9 question 26 |
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| 8675. |
2 5^p^3= n^p^4 |
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| 8676. |
Mid term sylabus |
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| 8677. |
If tanx=(m/m+1) and tany=(m/m+1) show that x+y=45° |
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| 8678. |
Find the sum of infinity in each of the following geometric progression |
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| 8679. |
cosa.cos2A.cos4Acos8A=sin16A÷16SINA |
| Answer» CosAcos2Acos4Acos8A=1/2sinA[(2sinAcosA)cos2Acos4Acos8A]=1/2sinA(sin2Acos2Acos4Acos8A)=1/4sinA[(2sin2Acos2A)cos4Acos8A]=1/4sinA(sin4Acos4Acos8A)=1/8sinA[(2sin4Acos4A)cos8A]=1/8sinA(sin8Acos8A)=1/16sinA(2sin8Acos8A)=1/16sinA(sin16A)=sin16A/16sinA (Proved) | |
| 8680. |
If r is the set of real number and q is the set of rational number than what is r-q |
| Answer» Irrational number | |
| 8681. |
Why tan 90° is infinite?? |
| Answer» BecauseSin90°= 1AndCos90°=0And the relation betweenTan a°= sin a°/ cos a°So,Tan90°= sin90°/ cos 90° = 1/0 = infinite | |
| 8682. |
If f={(1,1),(2,3),(0,-1),(-1,-3)}be a linear function from z to z find f(x) |
| Answer» 2x -- y =1 | |
| 8683. |
If R is a relation on a finite set having n elements , then the number of relations on A is ??? |
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| 8684. |
If theta = 1/3 ,then, cos theta = ? |
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| 8685. |
f(x+1/x)=x^2+1/x^2 x is not equal to 0 fin f(x) |
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| 8686. |
Solve the following system of inequalities graphically1. X+y=4,2x_y=0 |
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| 8687. |
Prove:Tan20.tan40.tan20.tan60=1\\6 |
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| 8688. |
Tan 70=tan 30 2tan45 |
| Answer» Plz koi answer dijiye | |
| 8689. |
How to find A intersection (B union D) |
| Answer» It is A intersection B uniion A intersection D | |
| 8690. |
range of cosx |
| Answer» -1,1 both include<br>[-1,1]<br>[-1,1] | |
| 8691. |
Sin(A+B) + sin(A+B) = 0 |
| Answer» 2sinAcosB+2cosAsinB | |
| 8692. |
Identity of tan2x |
| Answer» Tan 2x is 2tanx/1-tan²x<br>Tan2x=tan(x+x)=tanx+tanx/1-tanx.tanx=2tanx/1-tan squarex<br>Tan 2x = 2tanx/ 1-tan squarex | |
| 8693. |
Maths lab manual term 2 activities |
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| 8694. |
If n(A) =1, then n(P(P(P(A)))) =... ......... |
| Answer» If n(A) is 1 so n(P(P(P(A)))) is 16 | |
| 8695. |
cos2a+cos2b+cos2c=1-4sinasinbsinc |
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| 8696. |
a+b×a-b is equal to what |
| Answer» A square-b square | |
| 8697. |
If 2tanA=3tanBProve tan(A-B) = sin2B/(5-cos2B) |
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| 8698. |
Find square root of -16+30¡ |
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| 8699. |
12+16+24+40+........+nth term =4(2 to power n-1)+8n |
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| 8700. |
Write down all possible proper subsets of the set {1,{2,3}}. |
| Answer» The proper subsets are given by {1}, {2}, {3}, {1, 2}, {2,3}, {1, 3}.<br>Because 2,3 are also a set itself So 2 and 3come in double brackets<br>Sia it is wrong answer sis<br>1,2,3 | |