f(x) =-3 _2x^3 findf(-1)?

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f(x) =-3 _2x^3 findf(-1)?

2007-03-09 09:55:11 · 3 answers · asked by Anonymous in Education & Reference ➔ Homework Help

3 answers

If it is -3 minus 2x^3, that's -3 minus -2 which is -1

If it is -3 over 2x^3 then it's -3 over -2 or 1.5.

This is because you have to do exponents before multiplying, and (-1)^3 is still -1, so 2(-1)^3 is -2.

2007-03-09 10:28:43 · answer #1 · answered by hayharbr 7 · 1⤊ 0⤋

If you want the f(-1) you substitute the value -1 for x in the original equation. -1^3 is still -1. -1 x 2 = -2. You are now left with -3 minus -2 which becomes -3 +2 which equals -1.

2007-03-09 22:01:03 · answer #2 · answered by dpirsq2 5 · 0⤊ 0⤋

If I'm reading your equation right, I think it equals -1.

2007-03-09 18:25:27 · answer #3 · answered by Random answerer 2 · 0⤊ 0⤋