Let f (x) = 2xt2. Solve f^-1 (x) when x=4

Replace fx" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> f (x) fx with y" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> y y. 4⁢ x-12" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> 4 x - 12 4⁢x-12 Interchange the variables. x=4⁢ y-12" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> x = 4 y - 12 x=4⁢y-12 Solve for y" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> y y. Tap for more steps ... y=3+x4" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> y = 3 + x 4 y=3+x4 Solve for y" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> y y and replace with f-1⁢ x" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> f - 1 (x) f-1⁢x. f-1⁢ x=3+x4" role="presentation" style="outline: 0px; display: inline-block; line-height: 0; font-size: 18.08px; word-wrap: normal; word-spacing: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; margin: 0px; padding: 1px 0px; position: relative; "> f - 1 (x) = 3 + x 4 f - 1 (x) = 3 + x4