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← 2022 HSC Extension 1 paper Question 12(c)

Variation 1 · answer guide

Tangents and gradients — Related product

Question

Find the tangent to at .

This practice question was inspired by Question 12(c) in the 2022 NSW HSC Mathematics Extension 1 examination, © NESA. It is an original TestMum variation that practises the same mathematical idea, not an official NESA question.

Step by step

  1. Set up the solution: differentiate to find the gradient, then use the point-gradient form of the tangent.; at , .
  2. State the final answer clearly in the form the question requested.Point ; tangent .

Common mistake: changing so many features that the new example no longer tests the same mathematical idea.

Verification: Product rule plus standard inverse-sine derivative.

Any mark labels are a TestMum study aid, not an official NESA marking allocation.

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