kitsune0724
f(x)=x^3. How do I find the domain and range? Please and thank you?



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nitz
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\[x \in R\]

kitsune0724
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Thank you.

nitz
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WELCOME.........

nitz
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in this case domain and range both are R

kitsune0724
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so if f(x)=x^4 would have the same answer, right?

nitz
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IN THIS case domain is R

nitz
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\[[0,\infty)\]

nitz
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range is \[[0,\infty)\]

kitsune0724
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Thank you again. You're so much help.

nitz
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any other question.......?

kitsune0724
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yes.

kitsune0724
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f(x)= square root x+42

nitz
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can u please drawn it.......

kitsune0724
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ok

nitz
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is it \[\sqrt{x+4}2\] ??

kitsune0724
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\[f(x) equals \sqrt{x+4} 2\]

nitz
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here domain is \[x+4\ge 0 \implies x \ge 4\]

nitz
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sorry\[x \ge 4\]

nitz
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range is R

kitsune0724
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Thank you. ^_^