Sherming's answer to Justin Tan's Junior College 1 H1 Maths Singapore question.
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2d) & 2e)
they are quadratic equations !
key into calculator / gc like how u usually solve quadratic eqns
then u will end up with 2 answers usually
cos x= ? , cos x = !
reject one of them due to the limit given in qn
[ x is between 0 and 2pi ]
they are quadratic equations !
key into calculator / gc like how u usually solve quadratic eqns
then u will end up with 2 answers usually
cos x= ? , cos x = !
reject one of them due to the limit given in qn
[ x is between 0 and 2pi ]
Date Posted:
4 years ago
For 2e i got A= 3 and A=0.5
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