This blog dates back to 2015-16 while I was teaching senior high school Advanced Mathematics (formerly 2U Maths) in Sydney, Australia. It contains a wide range of explanations, notes, and resources covering senior secondary-level mathematics topics. The easiest ways to navigate are by using the search bar or browsing through the labels/tags. If you find my content helpful and would like to support my work, a coffee donation is greatly appreciated — thank you!
Saturday, 21 November 2015
GROVE PRELIM 2U/3U BOOK - TEST YOURSELF 8 - Q13
Regarding $\pi$ as a constant and differentiating with respect to $x$. $${dS\over dr}=2\times 4\pi r^{2-1}$$ $${dS\over dr}=8\pi r^{1}$$
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