How does v=d/dt(7.8+9.2t-2.1t^3) become v=0+9.2-(3)(2.1)t^2 ?

1 ⤊

Not sure how the two equations equal each other...

2007-10-17 13:27:22 · 4 answers · asked by hmmmm 1 in Science & Mathematics ➔ Physics

Did you understand calculus?

2007-10-17 13:33:13 · answer #1 · answered by Anonymous · 0⤊ 0⤋

It's differentiation.

The time differential of (7.8+9.2t-2.1t^3) = 0+9.2-(3)(2.1)t^2

2007-10-17 21:04:38 · answer #2 · answered by sojsail 7 · 1⤊ 0⤋

Is that the whole problem?

2007-10-17 20:31:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋

it doesnt

2007-10-17 20:32:35 · answer #4 · answered by S D 2 · 0⤊ 2⤋