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anonymous
 5 years ago
Amistre64, still around?
anonymous
 5 years ago
Amistre64, still around?

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0... is that a fat joke?...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0lol. I'm so glad to have you to lighten up the fact that calculus stinks! i have a piecewise function to type in here. Let me try to do it without the equation thingy,ok?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.02x3, x<or = to 2 2x+5, x>2 Need to find where this is undefined. How?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.02x3, x </ 2 2x+5, x > 2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the y value is defined for all cases; there is a gap between the lines at x=2 but it is still defined there

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.2Let me write it down in more beautiful typesett :D \(\begin{cases}2x3&,x\leq 2\\2x+5&,x>2\end{cases}\)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0maybe its asking for the missing gap?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0(7,1) perhaps; do we have options?

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.2Maybe asking where the function is discontinuous.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Ok, here's what it is asking for: To find where y' is undefined, find the value of x where the derivative on one side is different than the derivative on the other side. Does that make sense to you?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Amistre64, are you still here?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0yes, english is my native tongue

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.2When the function is discontinuous at a point, then the derivative is undefined there/ So y' is undefined at x=2.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the derivative of both side = 2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the derivatives are never different, so I assume the answer is defined for all x

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0y = 2x+5 at x=2 its defined there by the domain (inf,2]

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0it jumps yes; but it is defined

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.2That is not correct amistre64. Remember that diffferentiability implies continuity.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0im reading up on that now :) but does "undefined" pertain to jumps? id like to verify your answer :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the limit from the left and the limit from the right of piecewise function may be different; so the limit of the function does not exists at x=2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0the limit exists from the left; and from the right; but the two are not the same...

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.2you can try to use the definition of derivative to check it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thanks again! I'm sure I'll be back!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0i had to first figure out what the question was.. you did good watchmath :)
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