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y=ae^(x), y=be^(-x) intersect at right a...

`y=ae^(x), y=be^(-x)` intersect at right angles if ……….. `(a ne 0, b ne 0)`

A

`a=(1)/(b)`

B

a = b

C

`a=-(1)/(b)`

D

`a+b=0`

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The correct Answer is:
A
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KUMAR PRAKASHAN-APPLICATION OF DERIVATIVES -TEXTBOOK BASED MCQS
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  10. f(x)=x log x has minimum value ………

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  11. f(x)=sqrt(3)cos x + sin x, x in [0, (pi)/(2)] is maximum for x = …………

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