Grade Upto college level Integral Calculusf(x)=1+2sin x+3cos ²x find it`s maximum value VENU 12 Years agoGrade Upto college level
Sher MohammadApproved Tutor Answer12 Years agof'(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.