Differentiation

Differentiate the following with respect to x:

    \[\frac{1 - x^{2}}{1 + x^{2}}\]

Answer:

    \[-\frac{4x}{\left(1+x^{2}\right)^{2}}\]

Source: R.L. Rosenberg. (1984). Elementary Calculus: Course Notes. Ottawa, Canada: Holt, Rinehart and Winston. (Additional Exercises in Differentiation: Question (xx))

Author: ascklee

Dr. Lee teaches at the Wee Kim Wee School of Communication and Information at the Nanyang Technological University in Singapore. He founded The Mathematics Digital Library in 2013.

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