Find the difference quotient of f(x)=x^2-3; that is, find [f(x+h)-f(x)]/h, h =/= 0

asked Jul 14, 2018 203k views

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$\frac{f(x+h)-f(x)}h=\frac{((x+h)^2-3)-(x^2-3)}h=\frac{x^2+2xh+h^2-3-x^2+3}h=\frac{2xh+h^2}h=2x+h$

Dexterians answered Jul 20, 2018

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