The given function is,
.
Or,
To find the inverse of a function, first step is to switch x and y. Therefore,
Next stpe is to solve the above equation for y t get the inverse f f(x). Hence, multiply each sides by y + 5 to get rid of fraction form. So,
xy + 5x = 2y - 1
xy = 2y - 1 - 5x Subtract 5x from each sides to isolate y.
xy - 2y = -5x - 1 Subtract 2y from each sides.
y(x - 2) = -5x -1 Take out the common factor y.
Divide each sides by x-2.
So,
Now when we will compare with then we will get a = -5, b = -1, c = 1 and d=-2
So,
Hope this helps you!
Answer:
-6x - 33
Step-by-step explanation:
distribute -4 into 2x + 6 and then combine like terms
Equation 1:
2x + y = 25
-Subtract 'y' to both sides (quick note: pretend 'y' is '1')
2x + 1 - 1 = 25 - 1
2x = 24
-Divide '2' to both sides
2x/2 = 24/2
x = 9
Equation 2: 3y - x = 20
-Add 'y' (or 1) to both sides
3y - 1 + 1 = 20 + 1
3y = 21
-Divide '3' to both sides
3y/3 = 21/3
y = 7
Answer:
Explanation:
The equation is:
and
<u>1. Subsittute n = 6 into the equation:</u>
Now subsititute the known values:
You can solve for
<u />
<u>2. Substitute n = 5 into the equation:</u>
Substitute the known values and solve for
<u>3. Substitute n = 4 into the equation, subsitute the known values and solve for </u><u />
Answer:
2 solutions
Step-by-step explanation: As we have seen, there can be 0, 1, or 2 solutions to a quadratic equation, depending on whether the expression inside the square root sign, (b2 - 4ac), is positive, negative, or zero. This expression has a special name: the discriminant.