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Mathematics 20 Online
OpenStudy (anonymous):

Find f '(2)

OpenStudy (anonymous):

OpenStudy (fibonaccichick666):

What is your first thought here Squirrel?

OpenStudy (anonymous):

i think the 4sin(x) would be turned into 4cos(x)

OpenStudy (anonymous):

im just having a little trouble with the second part of the function

OpenStudy (fibonaccichick666):

ok, \[f(x)=4sinx+2x^x\]

OpenStudy (fibonaccichick666):

So yes, on the 4sinx

OpenStudy (fibonaccichick666):

ew wait, you need to go to the int tables for x^x form

OpenStudy (fibonaccichick666):

derivative table******

OpenStudy (anonymous):

can i find that online?

OpenStudy (fibonaccichick666):

yep

OpenStudy (anonymous):

ok i got x^x(1+lnx)

OpenStudy (fibonaccichick666):

ok, (I'm going to assume you looked it up right)

OpenStudy (fibonaccichick666):

the constant stays, then just put it all together and you are done

OpenStudy (anonymous):

yea i did

OpenStudy (fibonaccichick666):

ok, then you got it

OpenStudy (anonymous):

so i just put the 2 in there?

OpenStudy (fibonaccichick666):

yea constants just stay out front

OpenStudy (fibonaccichick666):

ie deriv of 3x=3(1)

OpenStudy (fibonaccichick666):

=3

OpenStudy (anonymous):

so how would i rewrite the second part with the 2?

OpenStudy (fibonaccichick666):

try it first

OpenStudy (anonymous):

is it ln2x?

OpenStudy (anonymous):

or does it stay as lnx?

OpenStudy (fibonaccichick666):

well what was the derivative of the second part?

OpenStudy (fibonaccichick666):

because to begin, that isnt it

OpenStudy (anonymous):

|dw:1416894849048:dw| thats basically what im stuck on right now

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