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Mathematics 20 Online
OpenStudy (anonymous):

Does the rule y = –3x5 represent an exponential function?

OpenStudy (anonymous):

no thats not an exponantial

OpenStudy (anonymous):

however is it \[y=3\times5\] or \[y=3x5\]

OpenStudy (anonymous):

if you mean \[y = 3x^5\] then no. but with your lack of notation you could mean \[3^{x5}\] and in that case it is. use the little hat: ^ to symbolise exponentiation

OpenStudy (anonymous):

yea. i forgot to put the sign.. ok so why doesn't it represent it

OpenStudy (anonymous):

an exponential function is of the form \[b \times a^{kx}\]

OpenStudy (anonymous):

eg \[y = 2^x\] is exponential.

OpenStudy (anonymous):

im still confused

OpenStudy (anonymous):

\[y=3x ^{5}\] is a polynomial like \[y=ax \] or \[y=ax ^{2}\] or \[y=ax ^{3} \] or \[y=ax ^{4}\] or \[y=ax ^{5}\] in all these cases x is still a base an exponential function actually means x is an exponent not base

OpenStudy (anonymous):

Jonask you are a life saver.. i love you right now lol

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