Hi i really need help with these questions: 1. y=sin t cos t 2. y= e^x/sin2x plz help me solve these problems thxx
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1) $\displaystyle \frac{dy}{dt} = (sin(t))'cos(t) + sin(t)(cos(t))' = (cos(t))^2-(sin(t))^2$ 2) $\displaystyle \frac{dy}{dx} = \frac{(e^x)'sin(2x)-e^x(sin(2x))'}{(sin(2x))^2} = \frac{e^x sin(2x)-2e^x cos(2x)}{(sin(2x))^2}$
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