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Mathematics 25 Online
OpenStudy (liv1234):

Can someone help me with a quick question?

OpenStudy (liv1234):

OpenStudy (liv1234):

@Nnesha

OpenStudy (liv1234):

@Michele_Laino

OpenStudy (michele_laino):

Hint: I think that it is a function, nevertheless, such function has not symmetry axes

OpenStudy (liv1234):

What does that mean? Hmm.

OpenStudy (michele_laino):

for example, such function is not symmetric with respect to the \(y-\) axis, so we can not write \(f(-x)=f(x)\), so it is not a even function

OpenStudy (liv1234):

So, does that mean it's not a function?

OpenStudy (michele_laino):

no, no, please it is a function, nevertheless it is not an \(even\) function

OpenStudy (liv1234):

So, we can say that option B is not the answer?

OpenStudy (michele_laino):

correct! Option B is a wrong option

OpenStudy (liv1234):

How will we eliminate the other options?

OpenStudy (michele_laino):

since our function is not symmetric with respect to the origin of the caertesian system, then we can say that our function is not an \(odd\) function

OpenStudy (liv1234):

Would it be option A? Because the function is neither B or C? And since it is a function, it must be A?

OpenStudy (michele_laino):

|dw:1448043409244:dw|

OpenStudy (liv1234):

Can you help me with another question?

OpenStudy (michele_laino):

correct! it is option A

OpenStudy (liv1234):

OpenStudy (michele_laino):

yes! I can help

OpenStudy (liv1234):

Okay, that's my question

OpenStudy (michele_laino):

ok! I'm thinking, please wait...

OpenStudy (liv1234):

Okay.

OpenStudy (michele_laino):

let's suppose to conside a value \(y_0\), namely we intersect both graphs of \(f(x)\) and \(g(x)\) with the horizontal line \(y=y_0\)

OpenStudy (michele_laino):

consider*

OpenStudy (liv1234):

Would it be option C?

OpenStudy (michele_laino):

such intersection happen at different \(x\) values, one value for each graph, then we can write: \[64x_2^3 = x_1^3\] and after a simplification, we get: \[4{x_2} = {x_1} \Rightarrow {x_2} = \frac{1}{4}{x_1}\]

OpenStudy (michele_laino):

so, what is the right option?

OpenStudy (liv1234):

C?

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