Math Problem Statement
Consider the function $f(x,y)=\sin(x+2y)$ where $x(t)=e^t$ and $y(t)=\cos(t)$. The derivative of f with respect to t equals
a.None of these
b.$\cos(e^t+2\cos(t))(e^t-2\sin t)$
c. $\cos(e^t+2\cos(t))(e^t-2)$
d.$\cos(e^t+2\cos(t))(e^t+2\sin t)$
e.$\cos(e^t-2\cos(t))(1-2\sin t)$
Solution
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Math Problem Analysis
Mathematical Concepts
Chain rule
Partial derivatives
Trigonometric functions
Formulas
Chain rule formula for multivariable functions
Theorems
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Suitable Grade Level
Advanced Calculus
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