Therefore, d dx. 1 √x = −1 2x√x d d x. 1 x = − 1 2 x x. Example 3: What is d/dx = Cos2 x, find it by using the derivative formula. Solution: Let us assume t = Cosx, then dy/dx = t 2 dt/dx = -sin x

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$\boxed{\Delta x=v_0t+\dfrac{1}{2}at^2}$. This is the third kinematic equation. Now, find $t$ from the first kinematic equation and substitute that in the second kinematic equation, you will get

Answer: a = (m2)g/ (m3 + m2) Explanation: Looking at the attached image, if we consider the free body diagram for block 3, by using Newton's first law of motion, we will arrive

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