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Edexcel FP3 Differentiation help!!

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    Edexcel FP3

    Exercise 3C
    5. Find an equation of the tangent to the curve with equation y=arcsin 2X at the point where X=1/4.

    Answer: squareroot(3) y - (pi squareroot(3))/6 = 4X - 1

    please show working.

    thanks.
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    (Original post by Grevade)
    Edexcel FP3

    Exercise 3C
    5. Find an equation of the tangent to the curve with equation y=arcsin 2X at the point where X=1/4.

    Answer: squareroot(3) y - (pi squareroot(3))/6 = 4X - 1

    please show working.

    thanks.
    I presume an earlier part of the exercise, or the examples, showed you how to differentiate inverse trig functions. You need to apply that knowledge here again to find dy/dx - the gradient of the tangent - and then use your knowledge of tangents to curves from C1/C2 to complete your solution.

Updated: April 17, 2012
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