Mathematic Problems
y=2xx2-1
y=2xx2-1=uv
u=2x  ;  u'=2
v=x2-1  ;  v'=2x
y'=u'v-uv'v2
y'=2·x2-1-2x·2xx2-12
y'=2x2-2-4x2x2-12
y'=-2x2-2x2-12
y'=-2x2-2x2-12