Save hours in development time and avoid common mistakes by learning the best practices to use for JavaScript.

Is it possible to solve and explain this question in a different way? I am working on an online mathematics Helper web site and I need solutions in different ways. This is not a homework or any kind of exam as I already have a solution of these questions. I just need different ways of solutions so that I can write different algorithms on those solutions and then call them in software coding randomly.

Experts Exchange Solution brought to you by

Enjoy your complimentary solution view.

Get this solution by purchasing an Individual license!
Start your 7-day free trial.

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

For the min/max you can do the second derivative of the original function at the vertex. If it is negative then the vertex is a maximum, a positive indicates a minimum, and 0 indicates (I forget the proper name) that it is a "flat spot with one side increasing and the other decreasing".

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trialI think first derivative of that equation would be:

2x-8+0

2x=8

x=4

The original function is:

x^2-8x+7=0

substituting x

8-32+7=0

y=31

I am not sure if this is correct. or I may mixing the integration with derivation.

Second derivative of the same equation:

x^2-8x+7=0

I think x=0

substituting x in that equation

y=7

So... the first derivative is 2x-8

The second derivative is 2.

Since the second derivative is positive, then the point is a minimum. That is, the function slopes upward on either side of that point.

Note that the second derivative doesn't depend on x. That means that as you move from left to right on the graph, its slope increases. When the slope is negative (as in to the left of the vertex), "slope increases" means it becomes less negative.

Math / Science

From novice to tech pro — start learning today.

Experts Exchange Solution brought to you by

Enjoy your complimentary solution view.

Get this solution by purchasing an Individual license!
Start your 7-day free trial.

Take the first derivative of the function

Solve it for 0 (i.e. what x gives you a first derivative =0?)

Plug that x in the original function to get the value of y