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If int (bx cos4x - asin 4x )/x^2 dx = (a...

If `int (bx cos4x - asin 4x )/x^2` dx = `(asin4x)/x` + c then a, b may be

A

a = 2 , b = 2

B

a = 1, b = 4

C

a = 5 , b = 2

D

a = 3 , b = 1/4

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The correct Answer is:
B
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PATHFINDER-INDEFINITE INTEGRATION-QUESTION BANK
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  2. If int e^x (tanx - log cos x) dx = f(x) log sec x then range of f(x) i...

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  3. If int (bx cos4x - asin 4x )/x^2 dx = (asin4x)/x + c then a, b may be

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  4. if int (e^(6logx) - e^(4logx))/(e^(3logx)-e^(2logx)) dx = phi(x), then...

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  5. If int dx/(x^6 + x^4) = tan^-1x + 1/x + k/x^3 + c, then value of k is

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  6. int (f(x)phi'(x)-phi(x)f'(x))/(f(x)phi(x)) {logphi(x) - logf(x)} dx is

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  7. int dx/(x^n(1+x^n)^(1/n)) is

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  8. If int dx/((x+1)^3 + (x+1)^2) is k[t - t^2/2 + t^3/3 - Inabst ] +c wh...

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  9. int (cos^3 x + cos^5 x)/(sin^2 x + sin^4 x) dx equals

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  10. int (sec x dx)/([sin(2x+alpha) + sin alpha]^(1/2)) is

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  11. If int (cos^4 x dx)/(sin^3 x (sin^5 x + cos^5 x)^(3/5)) is equal to -1...

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  12. Let f(x) = x + sin x . Suppose 'g' denotes the inverse function of 'f...

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  13. I = int 1/(cos^4 x) dx is equal to

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  14. int (x + 5)/((x-1)^2 (x-2)) dx =

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  15. int (3 + 2 cos x)/(2 + 3 cos x)^2 dx is equal to

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  16. int (x^2 - 1)/((x^2 +1) sqrt(x^4 + 1)) dx is equal to ?

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  17. I = int (x + x^(2/3) + x^(1/6))/(x (1+x^(1/3))) dx is equal

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  18. int (x^2 - 1)/((x^3)sqrt(2x^4- 2x^2 + 1)) dx is equal to

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  19. The value of the integral int e^(sin^2 x) (cos x + cos^3 x) sin x dx i...

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  20. int xabsx dx =

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