Toes♀@ani.social to 196@lemmy.blahaj.zone · 7 months agoGlitch in the matrixani.socialimagemessage-square347fedilinkarrow-up13
arrow-up13imageGlitch in the matrixani.socialToes♀@ani.social to 196@lemmy.blahaj.zone · 7 months agomessage-square347fedilink
minus-squareLimitless_screaming@kbin.sociallinkfedilinkarrow-up0·7 months agoI don’t think you encounter this one very often, but the technically correct -2^2 = -4 has a higher chance of ruining your day.
minus-squareLimitless_screaming@kbin.sociallinkfedilinkarrow-up0·7 months agoNo, you’d expect that -2^2 would equal 4, but calculators solve it as -(2)^2 not (-2)^2. But the case you mentioned is also pretty common.
minus-squareReveredOxygen@sh.itjust.workslinkfedilinkEnglisharrow-up1·7 months agoif you’ve touched polynomials ever, you’d expect the exponent to be before the negation. If you write x³-x² you don’t mean x³ + (-x)² = x³+x², you mean x³-(x²)
I don’t think you encounter this one very often, but the technically correct
-2^2 = -4has a higher chance of ruining your day.You mean x^2 =4 where x=±2
No, you’d expect that -2^2 would equal 4, but calculators solve it as -(2)^2 not (-2)^2. But the case you mentioned is also pretty common.
if you’ve touched polynomials ever, you’d expect the exponent to be before the negation. If you write x³-x² you don’t mean x³ + (-x)² = x³+x², you mean x³-(x²)