Derivative of 1x21 - x^{2}

The calculator will find the derivative of 1x21 - x^{2}, with steps shown.

Related calculators: Logarithmic Differentiation Calculator, Implicit Differentiation Calculator with Steps

Leave empty for autodetection.
Leave empty, if you don't need the derivative at a specific point.

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please contact us.

Your Input

Find ddx(1x2)\frac{d}{dx} \left(1 - x^{2}\right).

Solution

The derivative of a sum/difference is the sum/difference of derivatives:

(ddx(1x2))=(ddx(1)ddx(x2)){\color{red}\left(\frac{d}{dx} \left(1 - x^{2}\right)\right)} = {\color{red}\left(\frac{d}{dx} \left(1\right) - \frac{d}{dx} \left(x^{2}\right)\right)}

Apply the power rule ddx(xn)=nxn1\frac{d}{dx} \left(x^{n}\right) = n x^{n - 1} with n=2n = 2:

(ddx(x2))+ddx(1)=(2x)+ddx(1)- {\color{red}\left(\frac{d}{dx} \left(x^{2}\right)\right)} + \frac{d}{dx} \left(1\right) = - {\color{red}\left(2 x\right)} + \frac{d}{dx} \left(1\right)

The derivative of a constant is 00:

2x+(ddx(1))=2x+(0)- 2 x + {\color{red}\left(\frac{d}{dx} \left(1\right)\right)} = - 2 x + {\color{red}\left(0\right)}

Thus, ddx(1x2)=2x\frac{d}{dx} \left(1 - x^{2}\right) = - 2 x.

Answer

ddx(1x2)=2x\frac{d}{dx} \left(1 - x^{2}\right) = - 2 xA