4 replies to this topic

[Alivezombie16]

Ok, so I want to get the maximum value of a function on an interval, so i use fmax(f(x),a,b,n) just like it says in the manual. This works fine, it gives me the answer in what looks like a 2x1 matrix with the x-value on top and the y-value on the bottom. Now I would like to store the values somehow. I have tried variables, and matrices.
An answer would be helpful because I am editing an integral program, and I want to use the max and min of the fucntion as the parameters for the ViewWindow. So if anyone could help me with this, or show me a very good Riemann integration program, it would be helpful. Thanks in advance.

[TyYann]

The answer is a list. So you can store it in a list :

fmax(f(x),a,b,n) List 1

[caspro]

Here's a Riemann Sum program:
http://www.mth.msu.e...io/riemann.html

Typing - casio 9850 riemann sum - into Google brings up these two links:

http://www.casioeduc...nloads/cfx9850g

http://math.asu.edu/...RiemannSums.pdf

In the second link, it describes using the sigma command to do this instead of a program.

[Alivezombie16]

ok, thanks, but now here arises another question. Let's say, for example I do fmax(x^2,0,2), this produces the result {2,4}. Now, how could I store that 4 into a variable so I could put that as my Ymax for the ViewWindow.

The goal of my program is to, given a function, left and right bounds, and # of divisions, tell you the definite integral and the approximate integral and then draw the rectangles/trapezoids. My teacher designed one, but it's for the TI-83/84, so it doesn't translate cleanly to the Casio. This seems to be the only thing holding me back from making the program, so help would be appreciated. Thanks.

[caspro]

You can use:

Fmax(x^2,0,2)->List 1
List 12->Ymax

or

Fmax(x^2,0,2)
List Ans2->Ymax