Domain of function with radical in the numerator

Domain of function with radical in the numerator

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial discusses two mathematical restrictions involving radicals and powers. The first restriction requires the radicand to be greater than or equal to zero, while the second involves understanding that no real number raised to an even power can result in a negative number. The tutorial explains why only the first restriction is relevant and concludes with the solution that x must be greater than or equal to six.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first restriction mentioned in the video?

X must be less than 6

X must be greater than or equal to 6

X to the 4th power must equal 0

X to the 4th power must be greater than 1

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the fourth root of a negative number considered undefined?

Because it results in a negative number

Because it results in a complex number

Because it results in a positive number

Because it results in zero

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main reason the second restriction is not applicable?

Because it involves an odd root

Because it involves a negative radicand

Because no real number raised to the fourth power can be negative

Because it results in a complex number

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final solution for the value of x?

X is greater than or equal to 6

X is equal to 6

X is greater than 6

X is less than 6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you always check when you see a radical in an expression?

If the radicand is a complex number

If the radicand is equal to zero

If the radicand is greater than or equal to zero

If the radicand is less than zero