15 Test file number 59

  15.1 Problem number 112
  15.2 Problem number 113
  15.3 Problem number 117
  15.4 Problem number 118
  15.5 Problem number 195
  15.6 Problem number 200

Test folder name:

test_cases/3_Logarithms/59_3.2.1-f+g_x-^m-A+B_log-e-a+b_x-over-c+d_x-^n-^p