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JEE MATHEMATICS MCQ: DIFFERENTIATION

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Application +4 | -1

If

x = \frac{{1 - {t^2}}}{{1 + {t^2}}}

and

y = \frac{{2t}}{{1 + {t^2}}},

then

\frac{{dy}}{{dx}}

is equal to

View answer and explanation

Correct option: C

- \frac{x}{y}

Option C (

\frac{{ - x}}{y}

) is correct because after substituting

t = \tan \theta

and differentiating, the result is

\frac{{ - x}}{y}

.

More Questions from DIFFERENTIATION

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f(x)=|x|^{|\tan x|}

f^{\prime}\left(\frac{-\pi}{6}\right)

is equal to Let

x

y

be two real numbers such that

x>0

x y=1

. The minimum value of

x+y

f(x)=[x] \sin (\pi x)

[x]

denotes the integer part of

x

x=k, k

being an integer, the left derivative of

f(x)

y = {\sec ^{ - 1}}\left[ {\mathrm{cosec}x} \right] + \mathrm{cose}{\mathrm{c}^{ - 1}}\left[ {\sec x} \right] + {\sin ^{ - 1}}[\cos x] + {\cos ^{ - 1}}[\sin x],

\frac{{dy}}{{dx}}

\frac{d}{d x} \sin ^{-1}\left(3 x-4 x^{3}\right)

z = y + f\left( v \right),

v = \left( {\frac{x}{y}} \right),

v\frac{{\partial z}}{{\partial x}} + \frac{{\partial z}}{{\partial y}}