application of derivative (33)

If √1- x⁴ + √1- y⁴ = k(x² - y²) prove that dy/dx = x √1- x⁴ / y√1- y⁴

2 Answers

http://www.targetiit.com/iit-jee-forum/posts/proving-a-result-78.html

or
http://www.targetiit.com/iit-jee-forum/posts/please-see-more-than-one-choice-15199.html

this may help .....

thanks

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