Math

The gradient of the tangent to curve y = ax^3 + bx at the point (1,1) is -5. Calculate the values of a and b.

dy/dx = 3a^2 + b
-5 =

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asked by Kiff
  1. 1 = a + b

    -5 = 3a + b

    solve the system for a and b

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    posted by scott

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