Discuss the extremum of `f(x)=1/3(x+1/x)`

Discuss the extremum of f(x)=x^(2)+(1)/(x^(2))

Discuss the extremum of f(x)={1+sinx ,x<0x^2-x+1,xgeq0a tx=0

Discuss the extremum of f(x)=(40)/(3x^(4)+8x3-18x^(2)+60)

Discuss the extremum of f(x)=x(x^(2)-4)^(-(1)/(3))

Discuss the extremum of f(x)=2x+3x^((2)/(3))

Discuss the extremum of f(x)=sin x+(1)/(2)sin2x+(1)/(3)sin3x,0<=x<=pi

Discuss the extremum of f(x)=1+2sin x+3cos^(2)x,x<=x<=(2 pi)/(3)

Discuss the extremum of f(x)=sin x(1+cos x),x in(0,(pi)/(2))

Discuss the extremum of f(x)=2x^(3)-3x^(2)-12x+5 for x in[-2,4] and the find the range of f(x) for the given interval.

Discuss the extremum of f(x)=a sec x+b cos ecx,0