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Lösung 1.1:2e

Aus Online Mathematik Brückenkurs 2

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We expand the quadratic expression as

f(x)=x212=x222x21+12=x42x2+1.

When the function is written in this form, it is easy to differentiate term by term,

f(x)=ddxx42x2+1=ddxx42ddxx2+ddx1=4x4122x21+0=4x34x=4x(x21).