Question

metal and fan please dont tell me the answer explain how to solve this is one of many i have to do solve the equation by graphing the related function. if the equation has no real-number solution ,write no solution x^2+7=0

Answer 1

Anytime you have a problem where you must solve graphically here is what you do:

1) look for the equal sign. (did you find it?)
2) Everything to the LEFT of the equal sign is f(x) or \(y_1\) on your TI calculator.
3) Everything to the RIGHT of the equal sign is g(x) or \(y_2\) on your TI calculator.
4) Graph the functions from step (2) and (3) and find their points of intersection.
5) The x-coordinates of the intersection points will be the "real number solutions". If the graphs don't touch (another word for "intersect") then there are no real number solutions.
6) Remember to ZOOM in and out to make sure you get all solutions. The default view may hide solutions off-screen!