MATLAB.2
                                                                        
 Minimization
To find where a function attains its minimum on an interval we use the fmin 
command.

example
First we make a M-file.

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function w= f(x)
w=exp(-x^2+2*x) -.5;
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To find where f attains its minimum on [-1,3]  go to the command window and 
type:

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xm=fmin('f(x)',-1,3)
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To find the minimum value type:

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f(xm)
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NOTE f(x) maximizes where -f(x) minimizes.To find the maximum value of f(x) on 
[-1,3]
type:

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xM=fmin('-f(x)',-1,3);
f(xM)
********************************************

To find the maximum of abs(f(x)) on [-1,3] type:

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xM=fmin('-abs(f(x))',-1,3);
abs(f(xM))
*************************************************

ASSIGNMENT 2 :
Let
h(x)=x^3-6*x^2+x .

Graph h(x) on [-1,5] .   
Find where h(x) maximizes on [-1,5] and its maximum value.
Find where h(x) minimizes on [-1,5] and its minimum value.