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Mathematics 14 Online
OpenStudy (johnnydicamillo):

find derivative

OpenStudy (johnnydicamillo):

\[f(x) = \frac{ 3x^2 +6x +5 }{ \sqrt{x} }\]

OpenStudy (johnnydicamillo):

i am going to assume quotient rule

OpenStudy (zarkon):

\[f(x) = \frac{ 3x^2 +6x +5 }{ \sqrt{x} }=( 3x^2 +6x +5)x^{-{1/2}}=3x^{3/2}+6x^{1/2}+5x^{-1/2}\]

OpenStudy (zarkon):

now differentiate

OpenStudy (johnnydicamillo):

okay, give me a few with these fractions

OpenStudy (johnnydicamillo):

\[3x ^{1/2}+3x ^{-1/2}-5/2^{-3/2}\]

OpenStudy (johnnydicamillo):

@Zarkon

OpenStudy (zarkon):

3*(3/2)=9/2

OpenStudy (johnnydicamillo):

okay so \[\frac{ 9 }{ 2 }x ^{1/2} + 3x ^{-1/2} - \frac{ 5 }{ 2}x ^{-3/2}\]

OpenStudy (zarkon):

yes

OpenStudy (johnnydicamillo):

can I simplify?

OpenStudy (zarkon):

I wouldn't

OpenStudy (johnnydicamillo):

Okay, let me try putting this in

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