Question

Найти производную 

 

y=3/4x-x/2+5x

Answer 1

3/4-1/2+5=3/4-2/4+20/4=21/4

Answer 2

$y'=(frac{3}{4x}-frac{x}{2}+5x)'=-frac{3}{4x^2}-frac12+5=-frac{3}{4x^2}+4,5$