Podaj dziedzine funkcji f(x)=√25-x^2
25-x²≥0
(5-x)(5+x)=0
x=5 lub x= -5
D; x∈ < -5;5>
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25-x²≥0
(5-x)(5+x)=0
x=5 lub x= -5
D; x∈ < -5;5>