Найти производную f (x)= xtgx f (x)=xctgx

Question

Найти производную
f (x)= xtgx
f (x)=xctgx

Answer 1

F (х) = tgx
f(x)=ctgx

Comments

f(x)=xtdx

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f (x)=xtgx f'(x)=(x)'(tgx)+(x)(tgx)' f (x)=tgx+x/cos^2x