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2 answers:
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We have a piecewise function.
Therefore, to find the function, we must evaluate each domain separately.
We have then:
For
:
The function for this domain is:
For
:
The function for this domain is:
Where,
Substituting:
For
:
The function for this domain is:
Therefore, to find the function, we must evaluate each domain separately.
We have then:
For
The function for this domain is:
For
The function for this domain is:
Where,
Substituting:
For
The function for this domain is:
Keywords:
<em>equation, operations, equivalent, binomial, square root </em>
For this case we have an equation in which we must apply operations to rewrite it in an equivalent way. We must start by raising both sides of the equation to the square. Thus, we eliminate the square root of the left side of equality and finally solve the binomial of the right side of equality.
So we have:
By definition:
Thus, is equivalent to
Answer:
Option D