Differentiation chain rule help....
Find dy/dx y=2cos 7x
How do you do this?
Is u=7x and y=2cos ?
And then you find du/dx = 7 and dy/dx ? :|
How do you do this?
Is u=7x and y=2cos ?
And then you find du/dx = 7 and dy/dx ? :|
y = 2cos(7x).
Let u = 7x so y = 2cos(u).
Then dy/dx = dy/du * du/dx.
Let u = 7x so y = 2cos(u).
Then dy/dx = dy/du * du/dx.
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