If t = √(x) + 4, then (dx/dt)t=4 is: (a) 4 (b) zero (c) 8 (d) 16

Answer: (b). √(x) = t - 4 ⇒ x = (t - 4)² dx/dt = 2(t - 4) At t = 4: dx/dt = 0 So the answer is (b) zero.

If t = √(x) + 4, then (dx/dt)t=4 is: | JEE Main 2022 (29 Jul, Shift 1)

Q23JEE Main 2022 · 29 JUL · SHIFT 1Medium

Velocity, Acceleration & Variable Motion

If $t = \sqrt{x} + 4$ , then $\left(\frac{dx}{dt}\right)_{t=4}$ is:

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Answer: (b)

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