The **inverse** is usually shown by putting a little "-1" after the **function** name, like this: f-1 (y) We say "f **inverse** of y" So, the **inverse** of f(x) = 2x+3 is written: f-1 (y) = (y-3)/2 (I also used y instead of x to show that we are using a different value.) Back to Where We Started. The cool thing about the **inverse** is that it should give us back the original value:. **Inverse** trigonometric **functions** as the name suggests are the **inverse functions** of the basic trigonometric **functions**. Every mathematical **function**, from the easiest to the most complex, holds an **inverse**, or opposite **function**. In addition, the **inverse** is subtraction similarly for multiplication; the **inverse** is division.

How To: Given the **graph** of **a function**, evaluate **its** **inverse** at specific points. Find the desired input of the **inverse** **function** on the [latex]y[/latex]-axis of the given **graph**. Read the **inverse** **function**’s output from the [latex]x[/latex]-axis of the given **graph**.. The **function** on the **graph** is: Or, using a formal **function** definition: Lastly, this: could probably be read 'A is directly proportional to the **inverse** of B', but that would be unusual. **It's** 'A is inversely proportional to B'. Related: Direct proportions. Linear **functions**. **Inverse** proportions. Direct proportion **graph**. Rational **functions**, 1/x.

Nov 09, 2017 · Explanation: Let y = − (x − 3)2 + 1. The curve has a minimum point at (3,1) since this is the completed square form. y = − (x2 − 6x + 9) +1. y = − x2 +6x − 8. The curve is a 'n' shaped quadratic since the coefficient of x2 is negative, so the turning point is a maximum. let x = 0,y = − 8. From this information, we can put a ....