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Mike_bb

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- Why is Delta y not equal to dy for infinitesimally dx on the graph?

Hello!

As is known, [itex]\Delta y = dy[/itex] for infinitesimally small [itex]dx[/itex]. It's true.

But if we have graph we may see that [itex]\Delta y[/itex] isn't equal to [itex]dy[/itex] even for infinitesimally small [itex]dx[/itex]. Why is that so?

Thanks!

As is known, [itex]\Delta y = dy[/itex] for infinitesimally small [itex]dx[/itex]. It's true.

But if we have graph we may see that [itex]\Delta y[/itex] isn't equal to [itex]dy[/itex] even for infinitesimally small [itex]dx[/itex]. Why is that so?

Thanks!

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