If y=tanx how is dx/dt= 2? I dont understand where the 2 came from.
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I think i see now. If something changes 2 units per time unit?
Originally Posted by droidus If y=tanx how is dx/dt= 2? I dont understand where the 2 came from. I don't either (unless it was a given condition). Is there more to this problem that you've not mentioned? note ... $\displaystyle \frac{dy}{dt} = \sec^2{x} \cdot \frac{dx}{dt}$
You give y as a function of x but ask for the derivative of x with respect to t. There must be some other information, such as giving x as a function of t, that you did not post.
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