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Barinov228
@Barinov228
July 2022
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функция задана формулой f(x)=x+1/x-2
Найдите: а) f(-1)
б) f(4)
в) значение x, при котором f(x)=2
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EBVTJMJMMBZD
2 votes
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MizoriesKun
A) f(-1)=(-1+1)/(-1-2)=0/-3=0
b) f(4)=(4+1)/(4-2)=5/2=2,5
в) 2=(x+1)/(x-2)
2(x-2)=x+1
2x-4=x+1
x=1+4
x=5
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Answers & Comments
b) f(4)=(4+1)/(4-2)=5/2=2,5
в) 2=(x+1)/(x-2)
2(x-2)=x+1
2x-4=x+1
x=1+4
x=5