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F(x)=x*Sqrt(x^2+1)
let f(x)=x
let g(x)=Sqrt(x^2+1)
F'(x)=f'(x)*g(x)+f(x)*g'(x)
f'(x)=1
Use chain rule:
g'(x)=(x)*(x^2+1)^(-1/2)
F'(x)=Sqrt(x^2+1)+(x^2)/Sqrt(x^2+1)
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∙ 13y ago
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