CBSE Class 12-science Answered
find maximum n minimum value
Asked by | 14 Mar, 2008, 10:43: PM
Expert Answer
Let f(x)=x+sin2x
1. Find dy/dx=1+2cos2x
2.dy/dx=0 ,which implies x=pi/3 and 2pi/3
3.Second derivative of y at x= pi/3 is -4 sin2pi/3 which is negative., hence point of maxima
Second derivative of y at x= 2 pi/3 is positive,hence the point of minima
4. Maximum value= pi/3 + sq rt of 3/2
mininmum value = pi/3 - sr rt of 3/2
Answered by | 01 Apr, 2008, 01:31: PM
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