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Help me with my math homework please
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You are currently reading a thread in /r9k/ - ROBOT9001
Thread replies: 17
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Anonymous
Help me with my math homework please 2016-04-22 01:48:06 Post No. 28034349
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Help me with my math homework please Anonymous 2016-04-22 01:48:06 Post No. 28034349 [Report]
I'm almost done my math homework but these word questions are too hard. Everything is done but these, it's fucking impossible.

I don't necessarily want just the answer, just a hint to get me started.
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Anonymous 2016-04-22 01:52:46 Post No.28034412
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Anonymous 2016-04-22 01:52:46 Post No.28034412 [Report]
Start by taking the complex conjugate. Hint: think Riemann sums.
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Anonymous 2016-04-22 01:55:28 Post No.28034459
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Anonymous 2016-04-22 01:55:28 Post No.28034459 [Report]
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>>28034349
The question is upside down for some god forsaken reason, hopefully this is better.

>>28034412
I don't fully understand but thanks.
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Anonymous 2016-04-22 02:19:31 Post No.28034901
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Anonymous 2016-04-22 02:19:31 Post No.28034901 [Report]
>>28034459
plug the decibel values into the formula and solve dude. you should get a number greater than 1
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Anonymous 2016-04-22 02:26:55 Post No.28035006
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Anonymous 2016-04-22 02:26:55 Post No.28035006 [Report]
>>28034459
We should have taken bets on how long it would take OP to get his picture right

My bet is 4.
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Anonymous 2016-04-22 02:31:35 Post No.28035102
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Anonymous 2016-04-22 02:31:35 Post No.28035102 [Report]
>>28034901
What do you mean? Put the decibels where the (I)s are? There are 2 per question.

These kinds of questions drive me up the fucking wall. The other ones are just as weird.
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Anonymous 2016-04-22 02:39:25 Post No.28035243
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Anonymous 2016-04-22 02:39:25 Post No.28035243 [Report]
>>28035102
theyre looking for a ratio between the intensity of the teacher to intensity of the kids. the word problem tells you which intensity values represent which I. I_O will cancel out when you do the math out, so don't worry about it.
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Anonymous 2016-04-22 02:48:37 Post No.28035434
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Anonymous 2016-04-22 02:48:37 Post No.28035434 [Report]
>>28035243
Fuck it I still don't follow, I'll just leave it blank. Thanks for trying.
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Anonymous 2016-04-22 02:54:23 Post No.28035542
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Anonymous 2016-04-22 02:54:23 Post No.28035542 [Report]
>>28035434
your answer = It/Is = 10log(It/Io)/10log(Is/Io)
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Anonymous 2016-04-22 02:57:19 Post No.28035594
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Anonymous 2016-04-22 02:57:19 Post No.28035594 [Report]
anyone remember doing this on yahoo answers in 2003?
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Anonymous 2016-04-22 03:24:56 Post No.28036154
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Anonymous 2016-04-22 03:24:56 Post No.28036154 [Report]
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Can someone help with my math homework please?
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Anonymous 2016-04-22 03:36:32 Post No.28036406
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Anonymous 2016-04-22 03:36:32 Post No.28036406 [Report]
>>28034349
Shouldn't the equation on the right be for the intensity of the teacher?
Also 100,000
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Anonymous 2016-04-22 03:38:56 Post No.28036466
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Anonymous 2016-04-22 03:38:56 Post No.28036466 [Report]
>>28036406
10 dB increase is a doubling of intensity. so 5 doublings from 55 to 105 right? That's 32x the intensity.
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Anonymous 2016-04-22 03:44:00 Post No.28036560
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Anonymous 2016-04-22 03:44:00 Post No.28036560 [Report]
>>28036466
We often use the approximation in the lab that 3dB is roughly a doubling on a linear scale (at least in situations where you use a 10log10 dB scale rather than 20log10).
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Anonymous 2016-04-22 03:46:16 Post No.28036593
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Anonymous 2016-04-22 03:46:16 Post No.28036593 [Report]
>>28034349
Why can't these questions be written normally? why is math such a snowflake subject that any formula can be shat out and be required to use?

It pretends as if everything we solve is reverse engineering.
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Anonymous 2016-04-22 04:46:06 Post No.28037754
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Anonymous 2016-04-22 04:46:06 Post No.28037754 [Report]
>>28034349
Solve for both intensities, then divide the students intensity by the teachers intensity.
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Anonymous 2016-04-22 04:47:07 Post No.28037768
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Anonymous 2016-04-22 04:47:07 Post No.28037768 [Report]
>>28037754
I mean the teachers intensity by the students intensity
Thread replies: 17
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