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prepforcalc
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prepforcalc
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01-06-2018
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02-01-2018
09:55 PM
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02-01-2018,
09:55 PM
prepforcalc
replied to a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
This is my last post about anything other than the solution to the math question. The screenshot in the original post is self explanatory, other...
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13 replies | 436 view(s)
02-01-2018,
08:04 PM
prepforcalc
replied to a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
I am more confused than when I started this thread. If someone could just show me step by step, the answers to my questions in the OP, I would...
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13 replies | 436 view(s)
02-01-2018,
03:16 PM
prepforcalc
replied to a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
For this, I got, 1/2at^2=dx + c. I'm pretty sure dx + c is incorrect. I've had no trouble getting 1/2at^2 from at, the trouble is getting x out of...
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13 replies | 436 view(s)
02-01-2018,
03:14 PM
prepforcalc
replied to a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
Here's what I got: Vo^2 + 2Voa(t-to) + 2a(t-t0) Note, it's been a while since I've taken algebra and I'm working off 3 hours of sleep right now, so...
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13 replies | 436 view(s)
02-01-2018,
03:11 PM
prepforcalc
replied to a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
FYI - This is not a homework assignment. Instead, I am trying to understand something I am reading while self-studying calculus. It's been a while...
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13 replies | 436 view(s)
02-01-2018,
07:19 AM
prepforcalc
replied to a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
In that case, where did the following come from? This is from the screenshot in my first (original) post and it is to the right of the first equal...
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13 replies | 436 view(s)
02-01-2018,
01:23 AM
prepforcalc
started a thread
deriving v^2=v^2 + 2ax with calculus
in
Calculus
In the lines below, where does the 2Vo come from? The 2Vo I speak of is to the right of the first equal sign. . . . . .v(t)^2\, =\, v_0^2\, +\,...
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13 replies | 436 view(s)
01-29-2018,
10:46 PM
prepforcalc
replied to a thread
Getting the "1/2" in int[0,t][v_0 + at] dt = v_0 + (1/2)at^2 the calculus way!
in
Calculus
Oh thanks. I actually changed my initial answer above (one post above your last post). I am still confused but feel that a lot of progress has been...
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11 replies | 327 view(s)
01-29-2018,
06:04 PM
prepforcalc
replied to a thread
Getting the "1/2" in int[0,t][v_0 + at] dt = v_0 + (1/2)at^2 the calculus way!
in
Calculus
The integral of 1 is done by adding 1 to the power of zero which results in a power of 1, leaving 1 as itself. Also, in this process 1 is divided by...
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11 replies | 327 view(s)
01-29-2018,
03:41 PM
prepforcalc
replied to a thread
Getting the "1/2" in int[0,t][v_0 + at] dt = v_0 + (1/2)at^2 the calculus way!
in
Calculus
Right, the dt doesn't result in a t! Please excuse me, I'm very new to calculus. In fact the t in vt, comes from integration, as do all of the...
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11 replies | 327 view(s)
01-29-2018,
02:30 PM
prepforcalc
replied to a thread
Getting the "1/2" in int[0,t][v_0 + at] dt = v_0 + (1/2)at^2 the calculus way!
in
Calculus
The t from dt isn't involved in integrating (duh, sorry to overlook something so obvious). So, we have v(dt) + at(dt). Then the bold t's exponent...
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11 replies | 327 view(s)
01-29-2018,
01:44 PM
prepforcalc
replied to a thread
Getting the "1/2" in int[0,t][v_0 + at] dt = v_0 + (1/2)at^2 the calculus way!
in
Calculus
Why isn't it 1/3at^3? We start with t^2, and 2+1=3, so that makes it 1/3at^3, right? I mean, I know I'm wrong but just not sure why.
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11 replies | 327 view(s)
01-29-2018,
01:09 PM
prepforcalc
started a thread
Getting the "1/2" in int[0,t][v_0 + at] dt = v_0 + (1/2)at^2 the calculus way!
in
Calculus
I attached a screenshot. Would someone remind me of the calculus step or rule that allows one to go from the upper line to the lower line and get...
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11 replies | 327 view(s)
01-28-2018,
10:34 PM
prepforcalc
replied to a thread
Physics Velocity Equation, t, t-prime in v(t)=v_0 + int[t_0,t] a(t') dt'
in
Calculus
The context is a graph with acceleration on the y axis, and time on the x axis. The x axis is labeled, 0, to, t1, t2, t3, t4, t', t. Then there is...
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4 replies | 190 view(s)
01-28-2018,
08:09 PM
prepforcalc
started a thread
Physics Velocity Equation, t, t-prime in v(t)=v_0 + int[t_0,t] a(t') dt'
in
Calculus
Why put primes on some of these t's but not on all of them? Can you give an example of where t is unequal to t prime in this case? . . . ....
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4 replies | 190 view(s)
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