# Maple question

1. Sep 3, 2004

### Spectre32

Hey guys, I don't know if you can help me or not but i have a question dealing with maple. IT's asking me to find the MAX and Mins with my current function, and i've been trying everything. I differentiate it, and then use fsolve, but i can't get it to work. If anyone has an idea please help out.

Thanks

2. Sep 3, 2004

### robphy

If you post your code, we might be able to help.

3. Sep 3, 2004

### Triss

Although its not elegant it gives you the max and min's of an expression f:

Code (Text):
with(LinearAlgebra):
f := x^2 + 2*x + 1;
sol := [solve(diff(f,x)=0,x)]:
for i from 1 to Dimension(<sol>) do
y[i] := subs(x=sol[i],f): print([sol[i],y[i]])
end do:

4. Sep 5, 2004

### Spectre32

Yeah i had my fuction set you f and then had something like this:

diff(f,t);
folve(f(t)=0,t);

Or something similiar to that. I'm not at my maple computer so i'm trying to recall off the top of my head.

5. Sep 7, 2004

### Goalie_Ca

Yeh, but there's still saddle points to deal with. (2nd derivate check)
Look it up in a good calculus textbook and the write out the procedure in maple...