Question

用微分代替增量得arcsin0.02约等于什么

Answer 1

y'=arcsinx=(1-x^2)^0.5

dy=f(x)'dx

有增量y=arcsin(0.02)-arcsin(0)=arcsin(0.02)=f(0)'*0.02=(1-0^2)^0.5*0.02=0.02