Let f(x) be a continuous function defined on the interval [2, infinity) such that determine the value of it seems like an easy Q but I can't find the trick to it.
Follow Math Help Forum on Facebook and Google+
Originally Posted by monokill Let f(x) be a continuous function defined on the interval [2, infinity) such that determine the value of it seems like an easy Q but I can't find the trick to it. Here's the trick: (Integration by parts )
hmm i still dont haf the right answer. from what u suggested: = -4 so { -f(x)e^(-x/2) } evaluated from 3 to infinity + 2x = -4 then i got -infinity e^(-infinity/2) + 10e^(-3/2) = -4 but infinity x 0 = ??
because it says . The function can approach nowhere but 0. So, Let's call ...
That's what I did. So the answer should be but its incorrect
Sorry, I mistyped the integral and went wrong.. I hope this one is true..
it is! thanks so much
View Tag Cloud