记f(x)=x^1/6
f(x0+△x）≈f(x0)+△xf'(xo)
所以(65)^1/6=f(65)
=f(64+1)
≈64^1/6+1f'(64)
=2+1/6*64*(-5/6)
=2+1/192
用微分求(65)^6/1的近似值.
记f(x)=x^1/6
f(x0+△x）≈f(x0)+△xf'(xo)
所以(65)^1/6=f(65)
=f(64+1)
≈64^1/6+1f'(64)
=2+1/6*64*(-5/6)
=2+1/192