Other Math Archive: Questions from July 28, 2022
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\( y^{\prime \prime \prime \prime}-y=0 \) \( y^{\prime \prime \prime}-4 y^{\prime \prime}-5 y^{\prime}=9+5 x, y(0)=0, y^{\prime}(0)=0 \) and \( y^{\prime \prime}(0)=4 \)1 answer -
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use grade 12 methods
2. Prove the trigonometric identity below. \[ \tan (x-y)+\tan (y-z)=\frac{\sec ^{2} y(\tan x-\tan z)}{(1+\tan x \tan y)(1+\tan y \tan z)} \]1 answer -
1 answer