Question #29220
The function f is such that f(x) = (2sinx)^2-(3cosx)^2 for 0<x<pi
i) express f(x) in the form a+b(cos^2)x stating the values of a and b
ii) state the greatest and least values of f(x)
iii) solve the equation f(x) +1=0
i) express f(x) in the form a+b(cos^2)x stating the values of a and b
ii) state the greatest and least values of f(x)
iii) solve the equation f(x) +1=0
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#332078 on Oct 2022
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