A given sample of a particular polymer will have molecules w

A given sample of a particular polymer will have molecules with a range of molecular weights, MW. If the molecular weight pdf is f(MW)=10^-7(MW)e^(((-10)^-7)MW^2/2) , what fraction of the molecules will have a molecular weight greater than 10,000?

Everything in parenthesis past the e is it\'s exponent, and then the exponent -10 is also to the -7 and then that is multiplied by MW sqaured/2 if that equation isn\'t clear enough!

Solution

The answer is 0.0067