How do I get wolfram to solve this problem?

Question

I am trying to check some answers and can't seem to get wolfram to work properly.

I type in the following command :

integrate x.sin(x) dx

and it doesn't provide any solution it just says "visual representation of the integral" and then gives nothing else.

I am trying to check a different problem but can't get it work. What am I doing wrong ?

Thanks.

Answer 1

The correct syntax is

$$\tt integrate(x\ sin(x) )$$

or

$$\tt integrate(x\sin(x),x)$$

See http://www.wolframalpha.com/input/?i=integrate%28x+sin%28x%29+%29

Answer 2

Try typing the following :

integrate [x * sin x, x]