Say we want to find . Then we would make use of the identity , if either or is odd, and and , if m and n are both even. But isn't this impractical when m and n are large? When want to find, for example, ? Or am I missing some trick?
Say we want to find . Then we would make use of the identity , if either or is odd, and and , if m and n are both even. But isn't this impractical when m and n are large? When want to find, for example, ? Or am I missing some trick?