一條數學
大家唔該幫下手又係呢條
用初中既method好煩 呢題數我以前玩過..
果時計左好耐
but now ans 唔記得左la~ 其實1d都唔難計,但初中方法唔好搞
唔係唔識,係爆煩- - 不如計佢出黎la~
我想知道個ans... 大概講下點計都得thx Set a system of linear equations
A + 4B + 4C = 100
A + 2B = 50pi- 100
B + 2C = 100 - 25pi
Then, solve it !! 可唔可以講多少少- - 我唔係咁計-3-
其實佢講到好明啦- -
linear eqt. in 3 unknown
雖然初中冇教,不過可以用好簡易既邏輯都做到@@ 我都計到佢果d式,但係唔知點計個A出黎- -