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Monday, January 16, 2017

integral of linear expression in the numerator mixed with a quadratic expression

integral of  ∫ { (4x - 7) / (x² + x +1)} dx

here there is a linear expression in the numerator mixed with quadratic expression containing both (x^2)  and x terms

try to express the linear expression in terms of the derivative of the quadratic expression and a constant.
then break the numerator into two parts.
 one will be of the form [f '(x) / f(x)] , for the second part use completion of squares.








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