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severnikov
@severnikov
June 2022
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Найти значение производной в точке
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Galina22220
1 votes
Thanks 1
kirichekov
опечатка в предпоследней строке, => ошибка в ответе
kirichekov
Verified answer
F'(x)= (x^2-1)'(2x+1)- (x^2-1)(2x+1)'/(2x+1)^2=
=2x(2x+1)-2(x^2-1)/(2x+1)^2=
=4x^2+2x-2x^2+2/(2x+1)^2=
=2x^2+2x+2/(2x+1)^2;
f'(1)=2*1^2+2*1+2/(2*1+2)^2=
=6/8=3/4
2 votes
Thanks 1
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Verified answer
F'(x)= (x^2-1)'(2x+1)- (x^2-1)(2x+1)'/(2x+1)^2==2x(2x+1)-2(x^2-1)/(2x+1)^2=
=4x^2+2x-2x^2+2/(2x+1)^2=
=2x^2+2x+2/(2x+1)^2;
f'(1)=2*1^2+2*1+2/(2*1+2)^2=
=6/8=3/4