if `f(x)=cosx` find `f' (x)` from the first principle and hence find `f'(pi/4)`
657 views · Published 13 October 2018 · 2:12 · Indexed 6 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW if `f(x)=cosx` find `f' (x)` from the first principle and hence find `f'(pi/4)`
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