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@khanacademy@Negation2010 pretty sure it's purple -
@decarabas2@khanacademy I can't confirm. No coffee yet. Do not see colors.
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@salkhanacademy the pride of#Bangladesh@khanacademyThanks. Twitter will use this to make your timeline better. UndoUndo
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@khanacademy 0. A straight line parallel to x-axis has derivative equals to zero. -
@imKhan_m3 :/
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@khanacademy graph c!Thanks. Twitter will use this to make your timeline better. UndoUndo
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@khanacademy it’s sad how all these noobs fail to remember that at x={-2,1}, the derivative is undefined…#wow#sad -
@patomartinez10@khanacademy I find it sad that people who answer incorrectly are called names. - 1 more reply
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