2 6 25.) If [ f(x) dx =- and [ f(u) du =15, f(x) is an even function (symmetric to the y-axis), find the following: N a. [f (x) dx b. [f ( x ) dx c. [ -f (x) dx -2 d . ( 3f ( x ) dx -2 c. jf ( 3x ) dx 0 -2 26.) If [ f (x) dx =- and [ f(u) du =15, f (x) is an odd function (symmetric to the origin), find the following: a. [f (x) dx b. [f (x) dx c . [ - f ( x ) dx -2 d . ( 3f ( x ) dx -2 e. Jf ( 3x) dx -2