Question

y=（根号x+1）（根号x分之1-1）求导

Answer 1

化为y=1-x^1/2+1/x^1/2-1=x^-1/2-x^1/2

y'=-1/2x^-3/2-1/2x^-1/2

负二分之一x的负二分之三次方减二分之一x的负二分之一次方