Q. 195.0( 1 Vote )

# Show that</

Answer :

F(x)=x+ Taking first derivative and equating it to zero to find extreme points.

F(x)=1- X2=1

x=1,x=-1

now to determine which of these is min. And max. We use second derivative.

f||(x)= f||(1)=2 and f||(-1)=-2

since f||(1) is +ve it is minimum point while f||(-1) is –ve it is maximum point

max value-> f(-1)=-1+ =-2

min vaue-> f(1)=1+ =2

hence maximum value is less than minimum value

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