Question

QuestionFor the function f(d) = 7d– 8, find f(1)(Enter your answer as Ø if the function does not have a value at d = 1.)

Answer 1

Question:

Solution:

Let the following function:

$f(d)=\sqrt[4]{7d-8}$

if we evaluate this function at the point d=1, we get:

$f(1)=\sqrt[4]{7(1)-8\text{ }}\text{ = }\sqrt[4]{7-8\text{ }}\text{ = }\sqrt[4]{-1\text{ }}$

note that there is no number that multiplied 4 times gives you -1. Therefore, the value of this function does not exist.

Then, by problem notation, we get that the correct answer is:

$\emptyset$