I can't seem to prove the following property:

I want to prove that if then for all in .

Can anyone help me get started? I know I need to use the definition of an integral.

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- November 11th 2009, 07:23 AMadkinsjrProving a Property of Integrals
I can't seem to prove the following property:

I want to prove that if then for all in .

Can anyone help me get started? I know I need to use the definition of an integral. - November 11th 2009, 07:31 AMjeneverboy
Remember that the integral of a function f(x) is just the surface under the function. Since the function is always positive the surface will also be positive.