Truscape@lemm.ee to 196@lemmy.blahaj.zoneEnglish · 10 days agoMathematical Rulelemm.eeimagemessage-square11linkfedilinkarrow-up1205arrow-down13file-text
arrow-up1202arrow-down1imageMathematical Rulelemm.eeTruscape@lemm.ee to 196@lemmy.blahaj.zoneEnglish · 10 days agomessage-square11linkfedilinkfile-text
minus-squaretecht@lemmy.worldlinkfedilinkEnglisharrow-up9·10 days agoIn addition to the other great answers, you can really drive the intuition about how wrong this is in students/kids with simple examples: x+2/x+1 – cancel the x incorrectly and this always equals 2, which should fail the smell check immediately, verify with a couple values of x. x+1/x cancel the x incorrectly and undefined.
In addition to the other great answers, you can really drive the intuition about how wrong this is in students/kids with simple examples:
x+2/x+1
– cancel thex
incorrectly and this always equals 2, which should fail the smell check immediately, verify with a couple values ofx
.x+1/x
cancel thex
incorrectly andundefined
.