I need help finding the inverse of f(x)=7^3x5 with work shown.
 👍
 👎
 👁
 ℹ️
 🚩
2 answers

your f(x)=7^3x5 is ambiguous
did you mean it the way your typed it or
f(x)=7^(3x5)
The way you typed it:
let y = 7^3x  5
y + 5 = 7^(3x) , another ambiguity, the way you typed it, it would be
(7^3)(x)
I will go with my last interpretation.
y + 5 = 7^(3x)
step 1 is to interchange the x and y variables , so we get
x + 5 = 7^(3y)
step 2 is to solve this new equation for y, this requires logs
log(x+5) = log ( 7^(3x) )
log(x+5) = 3x(log7)
x = log(x+5)/(3log7) , x > 5
if you meant y = 7^(3x5)
then we get x = 7^(3y5), and now take logs of that etc. 👍
 👎
 ℹ️
 🚩

jgip87opgpy8iu
 👍
 👎
 ℹ️
 🚩
Answer this Question
Related Questions

math
How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation.

Algebra
what is the inverse of the linear parent function? How would you graph the inverse and what are the values for the inverse???

Math
Rebecca had 9/10 of a yard ribbon. Then she gave 7/20 of a yard to her friend. How much does she have left? Explain your work. I don't need a answer i just need help with finding the common denominator. Please help!

math
2. sylvia has 6 1/2 boxes of chocolate to share at a family picnic. if she gives each person 1/3 of a box, how many people can receive chocolate? 13 17 19 21 3.which of these numbers is not rational? square root 3 0.25 1/5 square root 9 4. a student's work

Algebra
a student's work to solve 2 6/7 divided by 2/7 is shown below. which of the following statements do you agree with? 2 6/7 divided by 2/7 = 19/7 divided by 2/7= 7/19 times 2/7= 7/19 times 2/7=2/19 cross out the 7 in the first one put a one and cross out the

Functions  math
The function f is such that f(x)� = 2x + 3 for x ≥ 0. The function g is such that g(x)�= ax^2 + b for x ≤ q, where a, b and q are constants. The function fg is such that fg(x)�= 6x^2 − 21 for x ≤ q. i)Find the values of a and b ii) Find the

Precalculus
Find the inverse of g(x)=(1/3x)7 and then find its domain and range. I already found the inverse of the function.

Algebra 2
Answers to the Inverse Relations and Functions Practice, cause I couldn't find it anywhere. 1. A relation is given in the table below. Write out the ordered pair for the inverse, and then determine is the inverse is a function. B) (0,1), (1,2), (0,3),

Physics
The force shown in Figure 717 moves an object from x = 0 to x = 75 m, where the interval between vertical dashed lines is 25 m. (a) How much work is done by the force? (b) How much work is done by the force if the object moves from x = 25 to x = 75 m?

Algebra 2
1.)Which relationship shows an inverse variation? A.)X:1,2,3,4. Y:3,6,9,12 B.)X:1,2,3,4. Y:60,30,20,15 C.)X:1,2,3,4 Y:15,13,11,9 D.)X:1,2,3,4 Y:6,11,20,35 2.) Suppose that X and Y vary inversely and that X=2 when Y=8. Write the function that models the

Career planning
Which of the following is an effective first reaction to a problem . A. Asking questions to help you understand the problem B. Deciding on a solution as quickly as possiable C. Finding someone else to handle the problem D. Removing yourself from the

Math
What is the multiplicative inverse of C/D? Explain how a number is related to its multiplicative inverse.

Math
What do you do to check whether a number is rational or irrational? How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation. Can someone please help me with these questions?!

math
which pair of transformations to the figure shown below would produce an image that is on top of the original A. a translation to the right and a reflection over the vertical line of reflection shown. B. a translation down and a reflection over the

Precalc
Consider the function f(x)=2x^3 +1. Determine whether the inverse of F is a function. Find the inverse.

math
Use the rules of equations and inverse operations to solve the equation. In your final answer, include all of your work. x 3  3 = 67

Algebra
How does finding the square root of a number compare to finding the cube root of a number? Use the number 64 in your explanation.

ASL
1. numbers are formed in asl using a technique similar to the one used in fingerspelling True** 2. What number is shown on the sign? 5** 3. What number is shown on the sign? 20** 4. What number is shown on the sign? 22** 5. What number is shown on the

Linear Algebra
which of the following functions is the inverse of F(X)=3x F(X)=3X F(X)=X (cubed)**** F(X)= X/3 This function does not have an inverse. Thank you!

trig
The average depth of water at the end of a dock is 6 ft. This varies 2 ft in both directions with the ride. Suppose there is a high tide at 4 am. If the tide goes from low to high every 6 hours, write a cosine function describing the depth of the water as
Still need help?
You can ask a new question or browse existing questions.