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Mathematics 16 Online
OpenStudy (anonymous):

Which function has the most x-intercepts?

OpenStudy (anonymous):

OpenStudy (anonymous):

@Hero can you explain to me what steps I take to solve this"?

hero (hero):

One step would be to familiarize yourself with the max number of zeroes a cubic function could possibly have.

hero (hero):

f(x) obviously has four zeroes. Can h(x) have more zeroes that that?

OpenStudy (anonymous):

Only 1

hero (hero):

A cubic function can have up to three zeroes right?

OpenStudy (anonymous):

Oh wait yes? and a squard one can have up to two

OpenStudy (anonymous):

I don't know?

hero (hero):

I mean f(x) already has four zeroes. So what do you think this means?

OpenStudy (anonymous):

h(x) has more

hero (hero):

But h(x) is the cubic function, right? A cubic function can only have up to 3 real zeroes right?

OpenStudy (anonymous):

(h)x has less

OpenStudy (anonymous):

f(x) could be a quadratic equation then? I am not sure

OpenStudy (anonymous):

@Hero

OpenStudy (anonymous):

Seriously if nobody is going to answer

hero (hero):

How many zeroes does f(x) have?

OpenStudy (anonymous):

4

hero (hero):

How many does g(x) have?

OpenStudy (anonymous):

2 or 3 I am not sure

hero (hero):

It only has two considering the restraints from x = 0 to \(x = 2\pi\)

OpenStudy (anonymous):

Okay so how do I solve this?

hero (hero):

Here's the graph of h(x) https://www.desmos.com/calculator/gbaecbuhmm How many zeroes does it have?

OpenStudy (anonymous):

3

hero (hero):

Okay, so which function has the most zeroes?

OpenStudy (anonymous):

So f(x) would be correct answer right?

OpenStudy (anonymous):

Hello?

OpenStudy (anonymous):

@Hero

hero (hero):

Yes, f(x) is correct.

OpenStudy (anonymous):

Ty, f(x) was correct. (Just took the test :)

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