maria3250 maria3250
  • 18-05-2021
  • Mathematics
contestada

For all values of x, f(x)=x-1 and g(x)=2x^2+3. Solve fg(x)=gf(x)

Respuesta :

goddessboi goddessboi
  • 18-05-2021

Answer:

x=3/4

Step-by-step explanation:

Given:

f(x) = x-1

g(x) = 2x²+3

Evaluate composite functions:

f(g(x)) = f(2x²+3) = (2x²+3)-1 = 2x²+2

g(f(x)) = g(x-1) = 2(x-1)²+3 = 2(x²-2x+1)+3 = 2x²-4x+2+3 = 2x²-4x+5

Set expressions equal to each other and solve for x:

2x²+2 = 2x²-4x+5

2 = -4x+5

-3 = -4x

3/4 = x

x = 3/4

Therefore, the value of x=3/4 satisfies both composite functions

Answer Link

Otras preguntas

Solve: –3 + x = 7That is the whole problem so adding words to make this be seen
4(X-1)-3(X^2+2X+3)-7(X+7)
the sum of Marys age and her moms age is 67.  Three times Marys age increased by 7 is her moms age.  How old is Mary and her mother
what is difference between kilowatt and kilowatt hour?
Need the values IN FRACTIONS (no mixed numbers or decimals)1. -1/2^12. -1/2^23. -1/2^34. -1/2^45. -1/2^5
I am looking for the square root of 5184 Thanks.
solve for t d=(1/2) at^2
You have been cleaning diesel dispensers for 35 minutes. You have completed 6 dispensers. How many minutes has it taken you to clean 1 dispenser?
if a+b+c=0 for a,b,c then prove a²/bc+b²/ca+c²/ab=3.
How do you write this in a algebraic equation: 6 more than 7 times a number is 41