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valenok18XD
@valenok18XD
June 2022
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помогите пожалуйста,нужно завтра
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wejde
Verified answer
1) f(x)=(5x+4)/(3-x)
D(y): 3-x≠0, x≠3→
x∈(-∞;3)U(3;+∞)
2) f(x)=√(3x+10)
D(y): 3x+10≥0, 3x≥-10, x≥-10/3→
x∈[-3 1/3;+∞)
3) f(x)=√(3-x)+√(x-1)
D(y): 3-x≥0, x-1≥0
x≤3, x≥1 →
x∈[1;3]
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Answers & Comments
Verified answer
1) f(x)=(5x+4)/(3-x)D(y): 3-x≠0, x≠3→x∈(-∞;3)U(3;+∞)
2) f(x)=√(3x+10)
D(y): 3x+10≥0, 3x≥-10, x≥-10/3→x∈[-3 1/3;+∞)
3) f(x)=√(3-x)+√(x-1)
D(y): 3-x≥0, x-1≥0
x≤3, x≥1 →x∈[1;3]