Differentiate y = x*cos(2x)

Related Further Mathematics GCSE answers

This is a question from a past paper: https://prnt.sc/r6jnxc

Answered by Marek S.

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A curve is mapped by the equation y = 3x^3 + ax^2 + bx, where a is a constant. The value of dy/dx at x = 2 is double that of dy/dx at x = 1. A turning point occurs when x = -1. Find the values of a and b.

Answered by Alistair R.

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Can you explain induction and go through an example?

Answered by Adamos S.

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x^3 + 2x^2 - 9x - 18 = (x^2 - a^2)(x + b) where a,b are integers. Work out the three linear factors of x^3 + 2x^2 - 9x - 18. (Note: x^3 indicates x cubed and x^2 indicates x squared).

Answered by Chris B.

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