A121. Function Exercises

VIEW:409 DATA:2020-03-20

Let the function f of Reais minus 1, defined in reais by the function s of t equal to 3 times t plus 2 all divided by x minus 1. What is the domain element that has image 2? Transforming into a physical system, imagine that the domain is time and the position of the car is the image. That way how long the car position is two units apart.

a. -2.
B. -4.
c. 3.
d. -3.
e. 4.
Knowing that s of t, is equal to 2, or two units of distance, so to find the t, which is the domain, and that we could say that it is time, then just match the function to the value and find the value of t , doing the algebraic calculation, we get that the domain is -4, and it would represent that the position would be 4 units of time before, that is -4 units of time. So we have that the domain that has the image 2, is equal to -4. In this case, alternative b.

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