QuestionStep 4 (b) To find the domain of , we examine the domains of the exponential and sine functions. Remembering that exists for all values of , the domain is what? (Enter your answer using interval notation.) Step 5 Next, we examine the sine. Since exists for all values of , then the domain of is what? (Enter your answer using interval notation.)
Studdy Solution
STEP 1
What is this asking?
We're figuring out what inputs we can give to the function so it produces a valid output!
Watch out!
Don't mix up the rules for sine and exponential functions.
They're both friendly, but in different ways!
STEP 2
1. Domain of the inner function
2. Domain of the outer function
3. Combine for the final domain
STEP 3
Let's **define** our inner function as .
We want to find all possible values of that we can plug into .
STEP 4
The exponential function is defined for *all* real numbers.
That means can be anything from negative infinity to positive infinity!
In interval notation, this is .
STEP 5
Subtracting **3** doesn't change what can be.
We can subtract **3** from any number.
So, the domain of is still .
STEP 6
Now, let's look at the outer function, which is the sine function.
We're taking the sine of the result of our inner function: .
STEP 7
The sine function, like the exponential function, is also defined for *all* real numbers.
No matter what we put inside the sine function, it will happily give us a result.
So, the domain of is .
STEP 8
Since the inner function produces values in the interval , and the sine function can accept any value in , the function is defined for all real numbers .
STEP 9
In other words, we can plug *any* real number into and get a valid output for !
STEP 10
The domain of is .
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