| Author |
Message |
    
Greg Beron
Intermediate Member
Username: Gberon
Post Number: 378
Registered: 03-2003
| | Posted on Wednesday, April 27, 2005 - 07:44 pm: | 
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Bill, I'm writing a brief note about calculating Ideal SRM for my monthly newsletter (giving your BYO article as the source and recommending buying the issue). But there's one thing I'm not clear on. Is the formula 0.14 * RA + 5.2 to be calculated as (0.14*RA)+5.2? Or is it 0.14*(RA+5.2)? You get quite different results depending on how you do the math. For example (014*100)+5.2= 19.2 while 0.14*(100+5.2)= 14.7
Thanks for your help.
Greg Beron
Culver City Home Brewing Supply
www.brewsupply.com
|
Hophead
Senior Member
Username: Hophead
Post Number: 1434
Registered: 03-2002
| | Posted on Wednesday, April 27, 2005 - 08:26 pm: |
|
According to my distant memories of basic mathematics, * has priority over +, so it would be "(0.14*RA)+5.2". |
Jon Tupper
Junior Member
Username: Jon_up_north
Post Number: 33
Registered: 04-2005
| | Posted on Wednesday, April 27, 2005 - 08:29 pm: |
|
Hophead is correct. Multiplication, division, roots, and exponentials first followed by addition and subtraction. |
robert rulmyr
Advanced Member
Username: Wacobob
Post Number: 545
Registered: 02-2003
| | Posted on Wednesday, April 27, 2005 - 08:57 pm: |
|
It's crystal clear now! Is that an SRM = 0? |
Chris Colby
Intermediate Member
Username: Chriscolby
Post Number: 313
Registered: 03-2003
| | Posted on Wednesday, April 27, 2005 - 09:04 pm: |
|
Yep, in the absence of parenthesis, multiplication and division take precendence over addition and subtraction.
Chris Colby
Bastrop, TX |
Greg Beron
Intermediate Member
Username: Gberon
Post Number: 379
Registered: 03-2003
| | Posted on Wednesday, April 27, 2005 - 11:31 pm: |
|
Thanks to all. My initial assumption was that the multiplication should come first, but I thought I'd better double-check.
Greg Beron
Culver City Home Brewing Supply
www.brewsupply.com
|
Brews and Views Archive 2005 
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