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If the angle between the lines whose dir...

If the angle between the lines whose direction ratios are 2 , -1 , 2 and x , 3 , 5 is `pi//4` , then the smallest value of x is

A

`52`

B

4

C

2

D

1

Text Solution

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The correct Answer is:
C
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KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 02-MATHEMATICS
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  2. Find the eccentricity of the elipse ( x^(2))/( 16)+ ( y^(2) )/( 9) =1

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  3. If the angle between the lines whose direction ratios are 2 , -1 , 2 a...

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  4. The point of intersection of the lines (x + 1)/(3) = (y + 3)/(5) = (z...

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  5. The point of intersection of the line joining the points (-3 , 4 , -8)...

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  6. If a real valued function of a real variable is defined as f (x) = cos...

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  7. If X = { 1 , 2 , 3} and Y = {0 , 1} and f : X to Y defined by f = { (1...

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  8. lim(x to oo) ((x + 6)/(x + 1))^(x + 4) , is equal to

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  9. If the function . f(x) = 4 xx 5^(x) for x lt 0 = 8a + x for x ge 0...

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  10. If f(a) = 2 , f ' (a) = 1 , g (a) = -1 , g'(a) = 2 , then lim(x to a) ...

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  11. The derivative of tan^(-1) [(sqrt(1 + x^(2)) - 1)/(x)] with respect to...

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  12. The value of dy/dx , when cos x = (1)/( sqrt(1 + t^(2))) and sin y = (...

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  13. If y = a cos 2 x + b sin 2 x , then

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  14. If l(1) = (d)/(dx) (e^(sin x)) , l(2) = lim(h to 0) (e^(sin ( x+ h)) ...

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  15. The value of the integral int e^(tan^(-1) x) * ((1 + x + x^(2)))/((1 +...

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  16. The value of the integral int (dx)/(x (1 + log x)^(2)) is equal to

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  17. If the binary operation ** is defined on a set of ordered pairs of rea...

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  18. The set of matrices S = {[{:( x , -x) , (-x , x):}]0 ne x in R} forms...

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  19. Let p and q denote the following propositions : p : To become an army ...

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  20. Indicate which of the following is a tautology .

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