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Cake day: July 26th, 2023

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  • Mistic@lemmy.worldtoLemmy Shitpost@lemmy.worldSBA #119 maths
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    3 days ago

    Let me just, ahem

    1-2+3/(3+3)×2+3×6/3 = 1-2+3/(3+3)×2+1×6 = 1-2+3/(3+3)×2+6 = 7-2+3/(3+3)×2 = 7-2+3/(6+6) = 7-2+(1/2+1/2) = 5+(1/2+1/2) = 5+1=6

    Ahh, yes, DMAMDSBA :P

    Let’s just say BODMAS/PEMDAS isn’t all end-all be-all. They’re good, but there’s also better

    For those interested, see: basic number properties


  • enter it into any calculator and you should get 9

    Have you tried it, though? My Casio says it’s 1

    That’s because it treats 2(1+2) as 2x and not 2*x

    It’s called juxtaposition and is the reason why people find this notation ambiguous. Some people account for it, some not. Same with calculators. The scientific ones are most likely to give you an answer of 1

    Edit: Look, this one even warns you about the implicit multiplication1000061536


  • Mistic@lemmy.worldtoLemmy Shitpost@lemmy.worldSBA #119 maths
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    3 days ago

    Usually, no sign before the bracket means juxtaposition. Scientific calculators do account for it (not all, tho), while regular ones may not.

    So 2(1+2) is really (2+4)

    Compare 2/2x and 2/2×X where x is (1+2)

    The first is 2/(2+4)=1/3, the second is (2/2)×(1+2)=3

    Basically, either 1 or 9 can be considered correct. And yes, it’s ambiguous.

    Also, there’s no real rule about solving left to right due to associative and commutative properties: 1×2×3 = 1×(2×3) = (1×2)×3 = 3×1×2 = 2×1×3 = 6






    • Cooler:

    Instead of Deepcool, I’d look at Thermalright. They have options that are cheaper yet perform better, including 360mm liquid coolers.

    As for the Arctic Freezer, it’s going to be an overkill, but having a nearly silent build is nice. Do be aware that it’s much easier to mess up a liquid cooler installation than air. Essentially, always put screws through fans first (otherwise you’ll damage the radiator) and never tighten them (otherwise, you’ll strip the threading, even with hands), if they hold the fans, that’s enough tightness. Except for the CPU screws, those are the same as with Air coolers.

    Overall, for your first build, I’d recommend going for an Air cooler and only then switching to liquid if you feel it’s needed. Temperature-wise you should be fine with either, 9700x isn’t that power hungry, and something like Thermalright PA 120 was doing just fine with my 5900x (although in a colder climate)

    • PSU:

    Don’t know about this MSI model, but I can recommend Xpg Core Reactor II 850W. There’s also a II VE version, but it’s a bit worse. Should be roughly the same price, but I can guarantee that this one is very reliable.

    Also, always check in with the PSU Tier list from ZTT. With this build I recommend going for tier B or higher. The XPG II one is the highest tier.

    • Bottlenecks and such

    It’s a balanced build, nothing else to say. Good job picking the parts. I personally may have gone for a CPU like 7800x3d, but that depends solely on your needs.