Math

Find the inverses of each of the functions below algebraically.

p(r)=2r^2+2r−1

3y+5x=18

  1. 👍 0
  2. 👎 0
  3. 👁 541
  1. p(r) or p = 2r2 + 2r - 1

    p = 2(r+0.5)2 - 1.5

    r = 2(p+0.5)2 - 1.5

    (r+1.5)/2 = (p+0.5)2

    +-sqrt[(r+1.5)/2] = p + 0.5

    p-1(r) = -0.5 +- sqrt[(r+1.5)/2]

    After testing, only right-hand side works. Hence p-1(r) = -0.5 + sqrt[(r+1.5)/2]

    1. 👍 0
    2. 👎 0
  2. can you find the other one aswell please

    1. 👍 1
    2. 👎 0
  3. Virtual high school right?

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Trigonometry

    Having trouble with true/false questions in Trigonometry. They read as follows - True or False: For a trigonometric function, y=f(x), then x=F^-1(y). Explain your answer. True or False: For a one to one function, y=f(x), then

  2. Algebra 2

    Which statements represent the relationship between y=2x and y=log2x ? Select each correct answer. The equation ​ y=log2x ​ is the logarithmic form of ​ y=2x ​.

  3. PLEASE HELP, MATH

    Determine algebraically if f(x) =(7x-2) / (4). And g(x) = (4x+2) / (7) are inverse functions. Show how you know, I do not understand this type of problem i have a test on these tmrw and need some help with how to figure these out

  4. Algebra 2

    for the functions f(x) = 5x +50 and g(x) = 1/5x -10 evaluate both f(g(x)) and g(f(x)). Are these functions inverses? do you put them into each other?

  1. Pre Calc

    7. The Sandusky Little League uses a baseball throwing machine to help train 10-year old players to catch high pop-ups. It throws the baseball straight up with an initial velocity of 48 ft/sec from a height of 3.5 ft. a. Find an

  2. Trig

    The point (1/3,1/4) lies on the terminal side of an angle. Find the exact value of the six trig functions, and explain which functions are reciprocal functions to each other.

  3. Math

    Can you help me with this problem Find the inverses of each of the functions below algebraically. a.p(r)=2r2+2r−1 b.3y+5x=18

  4. Calculus

    Find the minimum distance between the curves y=e^x and y=lnx. Hint: Use the fact that e^x and lnx are inverse relationships. I have no idea where to start. Thanks! calculus - Reiny, Monday, January 18, 2016 at 9:02pm to get you

  1. geometry

    In triangle $ABC$, $BC = 4$, $AC = 3 \sqrt{2}$, and $\angle C = 45^\circ$. Altitudes $AD$, $BE$, and $CF$ intersect at the orthocenter $H$. Find $AH:HD$. I tried using the pythagorean theorem to find side lengths, algebraically,

  2. math-please I really need help!!!!!

    Consider the functions f(x)=2x+8/x+6; g(x)=6x-8/2-x Find f(g(x)) Find g(f(x)) Deterrmine if f and g are inverses of each other. a. What is f(g(x))? Give any values of x that need to be excluded from f(g(x)) x=? b. what is g(f(x))?

  3. math

    f(x) = x^3 and g(x) = 3x-7 If the inverses of two functions are both functions, will the inverse of the composite function made by the original functions also be a function?

  4. Function compostions

    Sorry I had to repost, I left somethings out. Can you please check my answers? For the given functions f and g, find the indicated composition. 5. f(x)=7x+9, g(x)=2x-1 Find (f *g)(x) I got 14x+2 For the given functions f and g,

You can view more similar questions or ask a new question.