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?

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?
Anonim

Sagot:

Napakalalaking pag-format ng matematika …

Paliwanag:

#color (asul) (((1 / sqrt (a-1) + sqrt (a + 1)) / (1 / sqrt (a + 1) -1 / sqrt (a-1) +1) / ((a-1) sqrt (a + 1) - (a + 1) sqrt (a-1))) #

# = kulay (pula) (((1 / sqrt (a-1) + sqrt (a + 1)) / ((sqrt (a-1) -sqrt (a + 1) cdot sqrt (a + 1)))) / / sqrt (a + 1) / (sqrt (a-1) cdot sqrt (a-1) cdot sqrt isang + 1) sqrt (a-1))) #

# = kulay (asul) (((1 / sqrt (a-1) + sqrt (a + 1)) / ((sqrt (a-1) -sqrt (a + 1) cdot sqrt (a-1))))) / / sqrt (a + 1) / (sqrt (a + 1) cdot sqrt (a-1) (sqrt (a-1)

(= 1) sqrt (a + 1)) / sqrt (a-1))) xx (sqrt (a + 1) cdot sqrt (a-1) (sqrt (a-1) -sqrt (a +

# = kulay (asul) (sqrt (a + 1)) xx ((sqrt sqrt (a + 1))) xx (kanselahin ((sqrt (a + 1) cdot sqrt (a-1) (sqrt (a-1) -sqrt (a + 1))) / cancelsqrt)) #

# = kulay (pula) (((1 + sqrt (a + 1) cdot sqrt (a-1)) / (sqrt (a-1) sqrt (a-1) cdot (sqrt (a-1) -sqrt (a + 1)) #

# = kulay (asul) (cdot sqrt (a-1)) / cancel (sqrt (a-1))) xx ((sqrt (a + 1) cdot cancel ((sqrt (a-1)))) / / kulay (pula) (kanselahin (kulay (berde) ((sqrt (a-1) -sqrt (a +) (kanselahin ang kulay (berde) ((sqrt (a-1) -sqrt (a + 1))) #

# = kulay (pula) (ul (bar (| kulay (asul) ((1 + sqrt (a + 1) cdot sqrt (a-1)) cdot (sqrt ((a + 1) (a-1)))) | #

Sagot:

#sqrt (a ^ 2-1) + a ^ 2-1 #

Paliwanag:

Upang gawing simple ang mga bagay na lubos naming gagamitin # u ^ 2 = a + 1 # at # v ^ 2 = a-1 #, na nagbibigay sa atin:

# (v ^ -1 + u) / (u ^ -1-v ^ -1) * (uv ^ 2-vu ^ 2) / u = ((v ^ -1 + u) (uv ^ 2-vu ^ (Uv-u ^ 2 + (uv) ^ 2-vu ^ 3) / (1-uv ^ -1) = (uv (1 + uv) -u ^ 2 (1 + uv)) / ((vu) / v) = (uv (1 + uv) (vu)) / (vu) = uv (1 + uv)

#uv (1 + uv) = uv + u ^ 2v ^ 2 = sqrt (a-1) sqrt (a + 1) + (a-1) (a + 1) = sqrt (a ^ 2-1) + a ^ 2-1 #