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ajinkya bhole Grade: 10
        

if p+sin2x+cos4x.  then


a)3\4 ≤ p ≤ 1(how ????)


 

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear ajinkya


p=sin2x+cos4x


   =1-cos2x + cos4x


   = 1-cos2xsin2x


   =1-1/4 sin22x


for maximum value of P , sin2x =0


P = 1


for minimum value of P  ,sin2x=1


P= 1-1/4


   =3/4


so    3/4 ≤ p ≤ 1


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Badiuddin

7 years ago
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