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Mathematics 15 Online
OpenStudy (anonymous):

Need help with calculus question quickly!

OpenStudy (anonymous):

zepdrix (zepdrix):

\[\large\rm |x-3|=\cases{(x-3),\qquad x\ge3\\ \rm -(x-3),\quad x\lt3}\]

zepdrix (zepdrix):

So when we're on the `left side of 3`, Our |x-3| is -(x-3), giving us a function of:\[\large\rm t(x)=2^x-\frac{-(x-3)}{(x-3)}\]Err I guess it would be better to do this with limits. Approach 3 from the left, and seperately approach 3 from the right and see if the two pieces connect. If they don't, we have a jump discontinuity.

zepdrix (zepdrix):

\[\large\rm \lim_{x\to3^-}t(x)=2^{x}-\frac{-(x-3)}{(x-3)}\]Do a cancellation before plugging the 3 in :)

OpenStudy (anonymous):

Thanks! @zepdrix

zepdrix (zepdrix):

Did you figure out out Princess Jasmine? :o

OpenStudy (anonymous):

Yes. I said it was a jump discontinuity. I just needed a starting point.

OpenStudy (anonymous):

@zepdrix

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