Let `f(x)=tan^-1 x.` Then, `f'(x)+f''(x)` is `= 0,` when `x` is equal to
38 views · Published 13 October 2018 · 2:08 · Indexed 2 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Let `f(x)=tan^-1 x.` Then, `f'(x)+f''(x)` is `= 0,` when `x` is equal to
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