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1) y=√x.
2) y=1/x.
3) y=1/√x
4)y=1/x^2.
5)y=8/4√x-6/3√x.
6)=x^2 sin x.

1) y'=(√x)' = 2) y'=(1/x)' = 3) y'=(1/√x)' = 4) y'=(1/x^2)' = 5) y'= (8/4√x-6/3√x)' = (2√x-2√x)' = 0' = 0 6) y'=(x^2 sin x)' = 2x·sinx+ x²cosx.