@katie please stop deleting my questions. I'm trying to get help I'm not doing anything wrong I don't understand the work and you're just deleting them. So please stop

The same thing happened to me, so I emailed them about it and they told me it was a mistake in the system they use to detect if your question is valid.

You can email by going to the contact tab of their website, and entering your subject along with your email.

I think what happens is when you ask a question saying "please help" or something like that with an attachment of your problem it automatically removes it because you're not asking it in the question itself, only in the attachment.

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.