Question

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Answer 1

Răspuns:

Explicație pas cu pas:

4

f'(x)=-12x-1        

xmax=-1/12  ⇒fmax=f(-1/12)=-6·1/144-(-1/2)+5=-1/24+1/12+5=(-1+2+5·24)/24

=121/24

5

f(x)=-x²-8x+7       f'(x)=-2x-8      ⇒xmax=-4

fmax(-4)==-16+32+7=23

6

f(x)=-x²-2      f'(x)=-2x      ⇒xmax=0

fmax(0)=-2