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Differentiate y = x*cos(2x)

cos(2x) - 2x*sin(2x)

Answered by Parth M. • Further Mathematics tutor

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Solving equations with unknown in both sides

Answered by Yusuf S.

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).

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How can a system of two linear equations be solved?

Answered by Pablo A.

y=(6x^9 +x^8)/(2x^4), work out the value of d^2y/dx^2 when x=0.5

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