Respuesta :

mollydonovan3311
f(x)=4x+x2
f(x+h)=4(x+h)+(x+h)2=4x+4h+x2+2xh+h2
f(x+h)-f(x)=4h+2xh+h2
(f(x+h)-f(x))/(2h)=4+x+h/2

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