Question

Sendo f(x)=5.x, calcule f(x+h),f(x+h)-f(x) e f(x+h)f(x)/h

Answer 1

F(x+h) :::: 5.(x+h) = 5x+5h

F(x+h) - f(x) :::: (5x + 5h) - (5x) , cortando os dois 5x sobra o resultado = 5h

F(x+h) - f(x)/h :::::: (5x + 5h) - (5x) / h      =   5h/h