f(x)=1+2sin x+3cos ²x find it`s maximum value
VENU , 12 Years ago
Grade Upto college level
Integral Calculus> f(x)=1+2sin x+3cos ²x find it`s maximum v...
1 Answers
Sher Mohammad
f'(x)=2cosx-6cosxsinx=02cosx(1-3sinx)=0cosx=0 or sin(x)=1 f(x)=1+2=3sinx=1/3 imply cos^2(x)=1-1/9=8/9f(x)=1+2/3+3*8/9=1+10/3=4.33hence answer is 4.33.Sher MohammadB.Tech, IIT Delhi.
Approved Last Activity: 12 Years ago
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