kathyQ
differentiate power logarithmic function:
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colorful
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a what now?
not familiar with that compound term there...
colorful
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oh good, gonna type it :)
kathyQ
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|dw:1344460572765:dw|
colorful
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oy...
tedious
use log properties first to simplify this
colorful
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\[\log(x^a)=a\log x\]\[\log(\frac ab)=\log a-\log b\]
kathyQ
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hmmm...but i'm not sure whether to use 1/xlna or 1/x
kathyQ
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oh, i see
kathyQ
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let me try
colorful
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I love that attitude :)
kathyQ
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:)
kathyQ
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|dw:1344460921061:dw| ??
kathyQ
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|dw:1344461107424:dw|
kathyQ
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is that correct, or im missing something?
experimentX
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|dw:1344461330368:dw|
kathyQ
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|dw:1344461651309:dw|
experimentX
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yep ... you got it. if you want to check ... plug into wolframalpha
kathyQ
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|dw:1344461799411:dw|
kathyQ
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denominator*
kathyQ
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do you know why?
kathyQ
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oh, wow, thanks!!! so, basically, whenever i need to find the derivative of a power logarithmic function, i first apply the logarthmic properties as to get rid of the exponent, right?
experimentX
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yep ... try to make things as easy as possible.
kathyQ
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that's awesome!! thanks! :)
experimentX
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yw .... try putting input into right format.
to check if it's right or wrong ... just check input interpretation.
kathyQ
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yes, thanks. it's easier when they give the symbols. I was guessing. I didnt know i could just type "differentiate". can i type "integrate" too?
kathyQ
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i have little time using that website. i guess i need to figure out how to use it correctly
kathyQ
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wow, that's great. thanks a lot for ur help!!