Boy Mow Chau's answer to gwen's Secondary 3 A Maths Singapore question.
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(1) expand both series (only need up to x^2 terms)
(2) gather all the products that will give x and x^2 terms.
(3) compare coefficients of x and x^2 terms to get 2 simultaneous equations with 2 unknowns.
(4) solve for a & b.
(2) gather all the products that will give x and x^2 terms.
(3) compare coefficients of x and x^2 terms to get 2 simultaneous equations with 2 unknowns.
(4) solve for a & b.
Date Posted:
2 years ago
thank you so much. your working was really helpful as it was very detailed and organised. appreciate it so much :)
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