Sagot:
Hanapin ang mga inverses ng indibidwal na mga function.
Paliwanag:
Una naming makita ang kabaligtaran ng
Upang mahanap ang kabaligtaran, nagpapalitan tayo ng x at y dahil ang domain ng isang function ay ang co-domain (o hanay) ng kabaligtaran.
Sapagkat sinabihan tayo nito
Ipinakikita nito na
Upang ma-verify iyon
Kaya't itinatag namin iyon
(Sqrt (5+) sqrt (3)) / (sqrt (3+) sqrt (3+) sqrt (5) (3-) sqrt (5))?
(2) - (sqrt5-sqrt3) / (sqrt3 + sqrt3-sqrt5) = (sqrt5 + sqrt3) / (2sqrt3 + sqrt5) - (sqrt5 (sqrt5-sqrt3) / (2sqrt3 + sqrt5) - (sqrt5-sqrt3) / (2sqrt3-sqrt5) = ((sqrt5-sqrt3) (sqrt5-sqrt3) ) (2sqrt3-sqrt5) = ((2sqrt15-5 + 2 * 3-sqrt15) - (2sqrt15 + ^ 2 (= kanselahin (2sqrt15) -5 + 2 * 3cancel (-sqrt15) - kanselahin (2sqrt15) -5 + 2 * 3 + kanselahin (sqrt15)) / (12-5) = ( -10 + 12) / 7 = 2/7 Tandaan na kung ang mga denamineytor ay (sqrt3 + sqrt (3 + sqrt5)) at (sqrt3 + sqrt (3-sqrt5)) ay magbabago ang sagot.
Paano mo gawing simple (1 / sqrt (a-1) + sqrt (a + 1)) / (1 / sqrt (a + 1) -1 / sqrt (a-1)) div sqrt (a + 1) / ( (a-1) sqrt (a + 1) - (a + 1) sqrt (a-1)), isang> 1?
Malaking format ng math ...> kulay (asul) (((1 / sqrt (a-1) + sqrt (a + 1)) / (1 / sqrt (a + 1) -1 / sqrt (a-1) (a / 1) sqrt (a + 1) - (a + 1) sqrt (a-1))) = kulay (pula) (((1 / sqrt (a- (A + 1)) / (sqrt (a-1) -sqrt (a + 1)) / (sqrt (a + 1) cdot sqrt (a-1) Cdot sqrt (a-1) cdot sqrt (a + 1) -sqrt (a + 1) cdot sqrt (a + 1) sqrt (a-1) asul) (/ (sqrt (a-1) + sqrt (a + 1)) / ((sqrt (a-1) -sqrt (a + 1)) / (sqrt (a + 1) cdot sqrt (A-1) (sqrt (a-1) -sqrt (a + 1))) = kulay (pula) (A / 1) sqrt (a-1) sqrt (a + 1) (sqrt (a-1) -sqrt (a + 1))) / sqrt (a + 1) = kulay (asul) ((1 / sqrt (a + 1)) xx ((sqrt (a + 1) cdot sqrt (a-1)) / (sqr
Simplify ang expression ?: 1 / (sqrt (144) + sqrt (145)) + 1 / (sqrt (145) + sqrt (146)) + ... + 1 / (sqrt (168) + sqrt (169))
1 Tandaan na: 1 / (sqrt (n + 1) + sqrt (n)) = (sqrt (n + 1) -sqrt (n)) / ((sqrt (n + 1) + sqrt (n) (n 1) -sqrt (n)) kulay (puti) (1 / (sqrt (n + 1) + sqrt (n) n 1) -n) kulay (puti) (1 / (sqrt (n + 1) + sqrt (n))) = sqrt (n + 1) -sqrt (n) sqrt (145)) + 1 / (sqrt (145) + sqrt (146)) + ... + 1 / (sqrt (168) + sqrt (169) (sqrt (146) -sqrt (145)) + ... + (sqrt (169) -sqrt (168)) = sqrt (169) -sqrt (144) = 13-12 = 1