trapz between 2 points

Hello,

I want to calculate the integral under a curve between 2 specific points on the x-axis.

How can I do this?

Thanks.

Answer 1

[madhan ravi]

Example:

>> x=1:10

x =

     1     2     3     4     5     6     7     8     9    10

>> y=rand(1,10)

y =

  Columns 1 through 7

    0.8147    0.9058    0.1270    0.9134    0.6324    0.0975    0.2785

  Columns 8 through 10

    0.5469    0.9575    0.9649

>> trapz(x(4:6),y(4:6))

ans =

    1.1378

>>