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The vector hat i+x hat j+3 hat k is rot...

The vector ` hat i+x hat j+3 hat k` is rotated through an angle `theta` and doubled in magnitude, then it becomes `4 hat i+(4x-2)dot hat j+2 hat k` . Then value of `x` are `-2/3` (b) `1/3` (c) `2/3` (d) 2

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RESONANCE DPP ENGLISH-JEE MAINS-All Questions
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  2. Let f(x): D to R be defined as f(x)=(x^2+2x+a)/(x ,^2+4x+3a),w h e r e...

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  3. The vector hat i+x hat j+3 hat k is rotated through an angle theta an...

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  4. The first term of a sequence of numbers is a1=5 . Succeeding terms are...

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  7. If tangent and normal to the curve y=2sinx+sinx2x are drawn at p(x=(pi...

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  8. The coefficient of x^5in(1+2x+3x^2+)^(-3//2)i s(|x|<1) 21 b. 25 c. 26...

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  9. Vector vec a in the plane of vec b=2 hat i+ hat ja n d vec c= hat i-...

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  10. 3 firemen X, Y and Z shoot at a common target. The probabilities that ...

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  11. If vec a= hat i+ hat j+ hat k and vec b= hat i-2 hat j+ hat k , then ...

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  12. If A^2+A+I=0 , then A is non-singular A!=0 (b) A is singular A^(-...

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  13. If f(x), g(x) be twice differentiable function on [0,2] satisfying f''...

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  14. Let A=[1 0 1 1] . Then which of following is not true? (lim)(nvecoo)1/...

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  15. The set of values of lambda for which the vectors vec a=(lambda(log)2...

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  16. If z1,z2,z3,z4 be the vertices of a parallelogram taken in anticlockwi...

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  17. The value of the integral int(pi//3)^(pi//2)x sin(pi[x]-x)dx is (whe...

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  18. If z1, z2, z3 are distinct nonzero complex numbers and a ,b , c in R^...

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  19. Consider I1=int0^(pi//4)e^(x^2)dx ,I2=int0^(pi//4)e^x dx ,I3=int0^(pi/...

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  20. lim(xto0)(sinx^(4)-x^(4)cosx^(4))/(x^(4)(e^(2x^(4))-1-2x^(4))) is

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