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Find the derivatives of the followings f...

Find the derivatives of the followings from the `1^(st)` principle.
`x^2`

Text Solution

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Let, `f(x)=x^2`
`thereforef.(x)=lim_(hrarr0)(f(x+h)-f(x))/h`
`=lim_(hrarr0)((x+h)^2-x^2)/h`
`=lim_(hrarr0)(h(2x+h))/h`
`=lim_(hrarr0)(2x+h)`
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