Date: 22/03/2019 13:17:42
From: Spiny Norman
ID: 1364074
Subject: Integrals again

Got these question yesterday. I’m not really sure how to start the first one, can someone please show what I have to do? And some quick tips on the next two please. :D

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Date: 22/03/2019 13:46:31
From: sibeen
ID: 1364081
Subject: re: Integrals again

The slope of the curve at any point is going to be double the slope of any vector to that point from the origin, but that’s got sfa to do with an integral.

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Date: 22/03/2019 13:49:47
From: Bubblecar
ID: 1364084
Subject: re: Integrals again

Looks like Spiny is the victim of a pencil-wielding sadist.

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Date: 22/03/2019 13:54:22
From: Arts
ID: 1364087
Subject: re: Integrals again

I think the answer is purple monkey dishwasher…. or maybe dishwashers… I’ll give it some more work

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Date: 22/03/2019 14:41:54
From: Spiny Norman
ID: 1364115
Subject: re: Integrals again

sibeen said:


The slope of the curve at any point is going to be double the slope of any vector to that point from the origin, but that’s got sfa to do with an integral.

Okay, yeah. How about partial derivatives … ?

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Date: 22/03/2019 14:45:47
From: sibeen
ID: 1364121
Subject: re: Integrals again

Spiny Norman said:


sibeen said:

The slope of the curve at any point is going to be double the slope of any vector to that point from the origin, but that’s got sfa to do with an integral.

Okay, yeah. How about partial derivatives … ?

There’s only one variable.

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Date: 22/03/2019 14:46:49
From: Spiny Norman
ID: 1364122
Subject: re: Integrals again

sibeen said:


Spiny Norman said:

sibeen said:

The slope of the curve at any point is going to be double the slope of any vector to that point from the origin, but that’s got sfa to do with an integral.

Okay, yeah. How about partial derivatives … ?

There’s only one variable.

Yep. I’m still in the dark over it. Oh well …. Not going to go well in the short exam in an hour or so.

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Date: 22/03/2019 14:47:48
From: dv
ID: 1364124
Subject: re: Integrals again

The first one, if I’m reading it right, is just

RBAR = x i + 4x 2 j

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Date: 22/03/2019 14:48:30
From: Spiny Norman
ID: 1364125
Subject: re: Integrals again

dv said:


The first one, if I’m reading it right, is just

RBAR = x i + 4x 2 j

Ta.
What’s an RBAR ?

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Date: 22/03/2019 14:50:12
From: dv
ID: 1364127
Subject: re: Integrals again

Spiny Norman said:


dv said:

The first one, if I’m reading it right, is just

RBAR = x i + 4x 2 j

Ta.
What’s an RBAR ?

R with a bar on top

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Date: 22/03/2019 14:50:53
From: Spiny Norman
ID: 1364128
Subject: re: Integrals again

dv said:


Spiny Norman said:

dv said:

The first one, if I’m reading it right, is just

RBAR = x i + 4x 2 j

Ta.
What’s an RBAR ?

R with a bar on top

Righto. Ta.

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Date: 22/03/2019 14:53:10
From: Spiny Norman
ID: 1364132
Subject: re: Integrals again

So it’s a 4x^2 dot xi + yj thingy?

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Date: 22/03/2019 14:57:06
From: dv
ID: 1364135
Subject: re: Integrals again

Spiny Norman said:


So it’s a 4x^2 dot xi + yj thingy?

I don’t think so
It’s x i + 4 x 2 j

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Date: 22/03/2019 14:58:07
From: Spiny Norman
ID: 1364136
Subject: re: Integrals again

dv said:


Spiny Norman said:

So it’s a 4x^2 dot xi + yj thingy?

I don’t think so
It’s x i + 4 x 2 j

shrug Okay …

Gotta go now.

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