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Homework Statement
If P(x)=x^(1/2)
show that P(x+h)-P(x)=h/[(x+h)^(1/2)+ x^(1/2)]
Homework Equations
The Attempt at a Solution
pls help me. I don't have any idea of this...
Will i going to substitute it on the x variable? I don't know where it needs to be multiplied.Try multiplying by:
[tex]\frac{\sqrt{x+h}+\sqrt{x}}{\sqrt{x+h}+\sqrt{x}}[/tex]