switch-a-roo
Switch-a-roo can be used to solve any maths problem. It takes into account every equation which needs a bit of switching around.
Example:
Teacher: How do i find the area between the curve and the x-axis?
Student: With a quick switch-a-roo.
Teacher: How do i find the area between the curve and the x-axis?
Student: With a quick switch-a-roo.