: y = f ^ (-1) (x) domain: AC range: CA ⑷ above http://www.frtn.eu defined using the ^ -1 as determined by the function y = f ^ (-1) (x) is called a function y = f (x) of the inverse function is the inverse function y = f '(x) domain of definition, range are function y domains, and domain. = f (x) of the first two examples: s = vt referred to as f (t) = vt, its inverse function can nike air max pas cher be written as f ^ Nike tn (-1) (s) = s / v, y = 2x +6 Vocabulary same is f (x) = 2x +6, then its inverse function: f ^ (-1) (x) = x/2-3 sometimes the inverse function to be classified discussed, such as: f (x) = x + 1 / x, the x classification discussed: in the case when x is greater than 0, x is less than 0, and more is to be noted. The general fractional function representation of the Nike tn pas cher inverse function y = ax + b / cx + d (a / c is not equal to b / d) - y = b-dx/cx + a application directly seeking the range of the original function is difficult domain by seeking its inverse function to determine the range of the original function, find the inverse function of the step is this: 1, first find the inverse function of the domain because the domain is the inverse function of the range of the original function; (we know the function of the three elements of the domain, range, inverse solution x, which is expressed as x with y, so seek first the domain of the inverse function is the first step in seeking the inverse function);, rewritten, exchange position, which is changed to x y, the y changed to x; 4 to write the original function and range. Instance: y = 2x +1 (range: any real number) x = (y-1) / 2 y = (x-1) / 2 (X take any real number) in particular, shaped like a KX + KY = b and any one of its inverse function itself. Inverse function for solving three steps: 1, change: X, Y transposition 2 solution: solve for Y-3, marked: mark the domain