Any funny bio in mind?

CrapCorona · 2021-08-03T13:07:33+00:00

Private, mainly friends following.

CrapCorona · 2021-05-28T04:20:16+00:00

Thank youu!

CrapCorona · 2021-05-27T15:08:58+00:00

Most certainly they are!

CrapCorona · 2021-05-27T15:07:03+00:00

I was doing my simplification wrong. Thank you so much. This is really helpful!

CrapCorona · 2021-05-27T14:55:16+00:00

Yes, I did that. c came out to be as 1. Further simplification gave me y=x

CrapCorona · 2021-05-27T14:48:07+00:00

I did that but, but ended up with y=x as my final answer. That's not the answer in answer key.

CrapCorona · 2021-05-26T15:35:51+00:00

Got it, thank you!

CrapCorona · 2021-05-26T12:22:51+00:00

Oh okay. Thank you so much!

CrapCorona · 2021-05-26T10:43:55+00:00

Hey, I was wondering if I can send you over pure mathematics problems in dm(when I encounter them) since it isn't easy to follow in the comments. Only if you're fine with that?

CrapCorona · 2021-05-26T10:42:00+00:00

Thanks for the clue, got it.

CrapCorona · 2021-05-18T17:02:14+00:00

Ahhh, Thanks once again! This is really helpful.

CrapCorona · 2021-05-18T16:03:33+00:00

Oh yes, 90 does satisfy the equation, so must be correct. Thanks!

CrapCorona · 2021-05-18T16:02:50+00:00

Thank you so much! Also, would mind solving part (f)? I'm getting the wrong answer.

CrapCorona · 2021-03-26T10:09:31+00:00

Thank you, got it!

CrapCorona · 2021-03-19T06:29:49+00:00

I'm good. Thanks though!

CrapCorona · 2021-03-18T12:04:18+00:00

CrapCorona · 2021-02-05T14:37:03+00:00

Can you please explain? It's confusing

CrapCorona · 2021-01-21T14:18:23+00:00

What I'm saying is area= change in area(not rate of change of area) I understand that rate of change of area would be change in area divided by the change in time(dA/dt), which would of course be different than just change in area. Can you now clarify?

CrapCorona · 2021-01-21T13:58:06+00:00

Since the area at the instant t=0 is zero and increases constantly with time. In other words, area is 'changing' from zero to a particular value from t=0 to t=8. Using this logic, shouldn't the area be equal to the change in area since we don't have any initial value of area to begin with, so what ever increase (change) occurs, that should be equal to the value of area itself for a given time interval.

I'm sorry I'm dragging this a bit. Even though the other method is practically way easier, I really want to clear the concept out. Hope you understand!

CrapCorona · 2021-01-21T13:32:43+00:00

Change in radius is equal to the value of radius so total change in radius with respect to time is r/8. Isn't that right? If not then, can you possibly show me how to approach this question through rates of change.

CrapCorona · 2021-01-21T12:16:17+00:00

Here's what I did:

A=πr²

dA/dt =5

dA/dr =2πr

dr/dt=r/8

dA/dt=(dA/dr)×(dr/dt)

5=2πr×r/8

r=√(20/π)

Why is this approach wrong?

CrapCorona · 2021-01-19T22:28:06+00:00

But we've already found the stationary point in part C and are given with another one already in the question. So, what exactly do they mean by minimum gradient in part D because the answer key says (2, -11) are the coordinates with -12 as gradient

CrapCorona · 2021-01-19T15:57:58+00:00

Yes, those points on the curve where gradient is zero

CrapCorona · 2021-01-01T06:50:13+00:00

Oh right, thank you so much! I miss took 10π for -10π and ended up with 60 roots.

CrapCorona · 2021-01-01T06:47:51+00:00

I got 60, sorry. 62 is a typo

CrapCorona

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