Plotting a function that is determined by a Solve block and find Max/Min values

Forum|Forum|14 years ago
April 24, 2012
7 replies
3075 views

Hello,

I would like to plot a function, f(t) in which I previously used a Solve block to find the max/min value for the function. Since I had to put in an intial guess for the function in my Solve block the plot won't plot unless I move it above the solve block. Two questions then...

1. Is there a better way to determine the max/min values for a continous function over a given domain? I am not really sure how to set up the Maximize function for a problem like this.

2. Is there a way to reset a variable to be undefined once you have set it?

See attached example with the questions highlighted in yellow.

Thanks,

Mike

1_Example-Plot-Question-xmcd.zip

Other

M

MikeArmstrong

1-Visitor

How about the attached for undefining the variable?

Mike

1_Example-Plot-Question_MAA_01-xmcd.zip

E

Einhorn

Author

1-Visitor

That is interesting...I would have thought that defining t as a global variable would have kept the solve block from working.

Any thoughts on using the Maximize function to find the local value for t where the function is a Max?

Thanks,

Mike

M

MikeArmstrong

1-Visitor

I'm sure there is another way to undefine but cannot think at the moment.

There has been many worksheets past within the forum to find maximum and minimum values. Unfortunately I don't have time at the moment - try searching maxima or minima, you might find the sheets I am referring too.

If you don't find them I'll try and dig them out later.

Mike