Question

求f(x)=5-x分之3+5分之x的平方的导数

Answer 1

f(x)=3/(5-x)+x^2/5

f'(x)=3/(5-x)^2+2x/5

f(0)=3/5

f'(0)=3/25

f'(2)=3/9+4/5=5/15+12/15=17/15