Hey PF. I was wondering if anyone can help me figure out i can tell if certain functions are even or odd. For example, the function i*cos(ax)*sin(bx) when integrated with respect to x between -1/2 and 1/2 is equal to zero. I believe this means that it is even because it is symmetric around the y axis. To do the integration I used wolfram alpha, as this integral is beyond my current understanding, but I'm suppose to be able to do this problem without a computer apparently. This leads me to believe I should be able to tell that the function is even just by looking at it. Can somebody help me out here?