Ответ:
f'=(x-4)'(x+5)-(x+4)(x+5)'/(x+5)^2
f'=x+5-x-4/(x+5)^2
f'=1/(x+5)^2
f'(-7)=1/(-7+5)^2
f'(-7)=1/4=0,25
2)f'=2x+5
f'(-4)=-8+5=-3
3)max
4)f'(x)=5(3x+1)^4×3=15(3x+1)^4
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Ответ:
f'=(x-4)'(x+5)-(x+4)(x+5)'/(x+5)^2
f'=x+5-x-4/(x+5)^2
f'=1/(x+5)^2
f'(-7)=1/(-7+5)^2
f'(-7)=1/4=0,25
2)f'=2x+5
f'(-4)=-8+5=-3
3)max
4)f'(x)=5(3x+1)^4×3=15(3x+1)^4