inverse

  1. O

    Generating inverse

    Can someone help me find the inverse of $y = 7 + 5x^3 + x^7$? The fact that there is more than one variable to a unique power makes the inverse a little less obvious than usual.
  2. G

    Solve determining inverse functions

    Determine wether f(x) = 3x + 8 and g(x) = x - 8 / 3 are inverse functions. For f(x) = 3x - 19, find the inverse f-¹(x). Minus sign is supposed to be uppercase..
  3. K

    Numerical methods -finding matrix inverse

    Hello new to the forum so if this in the wrong topic I do apoligise. im struggling to work out why to find the inverse of upper triangular and lower triangular matrix of a nxn matrix the operation order is 0(N^3). i get that for a normal NxN matrix, using gauss elimination we get 0(N^3) but...
  4. O

    Exponential into logarithm equation

    Hi, I hope someone can help. I'm trying to convert y=100(2)^(x/0.32) to its inverse in logarithmic form. However, I'm struggling with the conversion steps. Can someone show me step-by-step on how to convert this equation? The answer is y = 0.32log(base 2)(x/100) Thanks, Olivia
  5. O

    Calculating inverse trig function

    Hi, I hope someone can help. How does my calculator know what the range restrictions are on a inverse trig function? I know that inverse trig functions have a one-to-many mapping, so you must restrict the range. For example, I know that for arccosin it is convention to restrict the range...
  6. J

    One to One Function

    Find all values of k such that f(x) = x^3 + 2x^2 + kx - 1 is one-to-one.
  7. J

    Inverse Trigonometric Function

    if tan x = 1/cot x tan^-1(x) = ?
  8. B

    Fourier transform of rect function and its inverse Fourier transform

    Hi I have calculated the FT of the rect function from -a to a and get this \frac{\sin(2\pi k a )}{\pi k} Now to perform the inverse \int^\infty _{-\infty}\frac{\sin(2\pi k a )}{\pi k} e^{2\pi i k x} dk I am not sure how to proceed from here, should I convert the sinc to and exponential?
  9. V

    Finding the Inverse of a Function

    Find the inverse of the function. Confirm algebraically by showing that f(g(x) = x and g(f(x) = x. Then confirm graphically. 7). f(x)= √2x+3 How do I set this problem up? And what are the step to solving it? I've looked through my book but I haven't seen any problem with the g, f, and x and...
  10. V

    Newbie to Pre-Cal (w/ Finding Inverse of Function question)

    I'm a high school student enrolled in a Pre-Cal course. I'm not very skilled when it comes to math, I've maintained C's and B's in each Math class I've ever been in and I've had to re-take a few of them.. I want to change that and keep my grades high this year. (Happy) Thank you everyone for any...
  11. X

    domain of inverse square root

    I'm asked to find the domain for this question... My ans is (x-1)^2 + (y+1) ^2 >-1 , but the ans given by the author is different , from the sketch , we can know that the author ans is (x-1)^2 + (y+1) ^2 ≠ -1 , am i right ? Which is correct ? http://imgur.com/a/Kn68f
  12. E

    Inverse Logarithms

    Hi! I am really confused on how to inverse logarithms! For this question, what would you do: y=10^0.5x Or this one: y= 3log10x Any help much appreciated! Thanks in advance, ~EbonyJade :)
  13. C

    Inverse logarithmic functions

    Hi all, I'm trying to learn how to do inverse logarithmic functions but I keep getting confused on what I'm supposed to do and can't find a good website that tells me the exact steps. So I have tried the following examples: 1. f(x) = 3^x +2 x = 3^y + 2 x-2 = 3^y And somehow that is supposed to...
  14. C

    First compute the inverse of the function, then the derivative at y=0

    Please help! Okay so I got this function f(x) = x^3 + x + 2. First I have to find the inverse of the function. After that I have to get the derivative of the inverse function at y=0. Sorry for bad explanation(finnish engineer student)
  15. H

    inverse probability density function

    Hi, In Excel there is a Norm.INV() function and in my current tool I don't have that (PowerPivot). Does anyone know how to calculate the Norm.INV()? I've read something about the BOX-Mueller but I don't understand it quite..I want to generate a simulation based on random function and based on...
  16. U

    Integration of Inverse Trig Functions 2

    I am having trouble integrating the function below. I haven't studied integration techniques beyond integration by substitution and a few basic integration tables. So, do not show integration by parts, trigonometric substitution or partial fractions in terms of solving this problem. I think...
  17. U

    Integration of Inverse Trig Functions 1

    I am having trouble integrating the function below. I haven't studied integration techniques beyond integration by substitution and a few basic integration tables. So, do not show integration by parts, trigonometric substitution or partial fractions in terms of solving this problem. I think...
  18. C

    Inverse Functions CAS

    Hi :) how do you input an inverse function in a Ti-Inspire CAS calculator?
  19. T

    Inverse of Elimination Matrix

    My book said the inverse of an elimination matrix is simply a matrix with diagonals of 1 and all the off diagonal nonzero terms of the elimination matrix multiplied by negative 1. Thus, if E=\begin{bmatrix} 1 & 0 & 0 \\ 0.5 & 1 & 0 \\ 0.25 & 1 & 1 \end{bmatrix} then E^{-1} = \begin{bmatrix}...
  20. C

    Inverse Functions

    Hi :) I am learning Inverse Functions and I'm wondering how you would figure it out when an interval is already given to you like the example below: I will show you what working out I've already done: Find the inverse function and state its domain and range. f: [1,5] -> R, f(x) = 3-x f(x)-1...