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ב.f'(x)=(1/sqrt(x))-1(1/sqrt(x))-1=01/sqrt(x)=1x=1y=1(1,1)f''(x)=-1/(2*sqrt(x^3))f''(1)=-1/2MAX (1,1)
f'(x)=(1/sqrt(x))-1(1/sqrt(x))-1=01/sqrt(x)=1x=1y=1(1,1)f''(x)=-1/(2*sqrt(x^3))f''(1)=-1/2MAX (1,1)
f''(x)=-1/(2*sqrt(x^3))f''(1)=-1/2MAX (1,1)
ג.f(x)=2*sqrt(x)-xf(0)=0-0=0(0,0) OKf(4)=2*sqrt(4)-44-4=0(4,0) OK
f(x)=2*sqrt(x)-xf(0)=0-0=0(0,0) OKf(4)=2*sqrt(4)-44-4=0(4,0) OK
f(4)=2*sqrt(4)-44-4=0(4,0) OK