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y = sec(tan^-1 x): find dy/dx at x = 1

The same question, asked 2 times: 3 May 2023 S1, 16 May 2023 S1. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    3 May 2023 S1

    126
    If y=sec⁡(tan⁡−1x)y=\sec(\tan^{-1}x), then dydx\frac{dy}{dx} at x=1x=1 is equal to

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  2. Question 2

    16 May 2023 S1

    131
    If y=sec⁡(tan⁡−1x)y = \sec(\tan^{-1}x), then dydx\frac{dy}{dx} at x=1x=1 is equal to

    Tap an option to check your answer.