Asked by Peter
is square root x^4-4-y=0
and x^2+y^2=4
a function
and x^2+y^2=4
a function
Answers
Answered by
Reiny
square root x^4-4-y=0
y = √(x^4-4) , yes , a function
x^2 + y^2 = 4 is not a function, it is the equation of a circle, so clearly for an x you pick in the domain there is more than one value of y
y = √(x^4-4) , yes , a function
x^2 + y^2 = 4 is not a function, it is the equation of a circle, so clearly for an x you pick in the domain there is more than one value of y
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