dobule arrows

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Kayko Lee 1C
Posts: 111
Joined: Wed Sep 30, 2020 9:39 pm

dobule arrows

Postby Kayko Lee 1C » Wed Jan 06, 2021 5:44 pm

I was doing the sample problems that Sapling works out and what does "<<" mean? For example, "make the approximation that x << 3.21 and 6.21, then solve the equilibrium expression for x."

Karl Yost 1L
Posts: 162
Joined: Thu Dec 17, 2020 12:19 am

Re: dobule arrows

Postby Karl Yost 1L » Wed Jan 06, 2021 6:22 pm

I believe that they mean "is much larger than."

E.g. (i) 4<6 (ii) 4<<6*10^12

Serena Song 1A
Posts: 90
Joined: Wed Sep 30, 2020 9:53 pm
Been upvoted: 1 time

Re: dobule arrows

Postby Serena Song 1A » Wed Jan 06, 2021 7:11 pm

I agree that it most likely means much less than. For example going back to VSPER, trigonal pyramid has a bond angle x < 109.5, while bent (2BP,2LP) had a bond angle x << 109.5 since it usually had a smaller bond angle than molecules with the trigonal planar shape.

Hannah Chang 3K
Posts: 93
Joined: Sat Oct 17, 2020 12:15 am

Re: dobule arrows

Postby Hannah Chang 3K » Thu Jan 07, 2021 9:40 pm

"<<" ---->much less than

Mary Shih 3J
Posts: 96
Joined: Wed Sep 30, 2020 9:39 pm

Re: dobule arrows

Postby Mary Shih 3J » Thu Jan 07, 2021 9:44 pm

double arrow is the emphasize the quantity of the number. MUCH less than or MUCH more than

Andrew Yoon 3L
Posts: 92
Joined: Wed Sep 30, 2020 9:36 pm

Re: dobule arrows

Postby Andrew Yoon 3L » Thu Jan 07, 2021 10:03 pm

"<<" refers to how much smaller (or larger depending on what you're looking at) the number/variable is compared to the other number/variable.

Lorraine Jiang 2C
Posts: 102
Joined: Wed Sep 30, 2020 9:54 pm
Been upvoted: 1 time

Re: dobule arrows

Postby Lorraine Jiang 2C » Fri Jan 08, 2021 6:25 am

Hi! I think the double arrow just highlights that value A is definitely smaller/larger than value B.

Hope it helps!


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