Նախագիծ 2

84.  log100/√10 = 1.5

        Log₂⁵√4 = 0.4

89.  log(1-x²)

        x≥-3

99.  log₅ 11*log₁₁ 0.04                                                 log₃ 4*log₁₆ 9

        3/2*0.74 = 1.11                                                    0.8*1.25 = 1

133.  log₇(6x-1) = log₇(4x+9)                                      log₄(5x+3) = log₄(7x+5)

         6x-1 = 4x+9                                                          5x+3 = 7x+5

         2x = 10                                                                  -2x = 2

         X = 5                                                                      x = -1

157. log₄(x+3) ≤ log₄(9x-13)                                    log_3/5(2x+7)> log_3/5(7x-18)

         X+3 ≤ 9x-13                                                       2x+7 > 7x-18

         -8x ≤ -16                                                            -5x > -25

         X ≤ 2                                                                   x > 3