If \log (x^2+y^2) =2 \tan ^{-1} (\frac{y}{x}), show that ...

CBSE Class 12 Math 2019 Delhi Set 1 Solved Paper

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Question : 16 of 29

Marks: +1, -0

If log(x2+y2)=2tan−1(‌

y

x

), show that ‌

dy

dx

=‌

x+y

x−y

.
OR
If xy−yx=ab, find ‌

dy

dx

.

Solution:

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