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- import math
- print 'A=Pert Calculator'
- print ''
- print 'Created by Triton Seibert'
- print ''
- Y = raw_input('What letter would you like to solve for?: ')
- if Y == 'A' or 'a' or '1':
- print 'Solving for A'
- print ''
- P = float(raw_input('Set value for P (initial investment):'))
- e = 2.71828
- print ''
- r = float(raw_input('Set value for r (rate):'))
- print ''
- t = float(raw_input('Set value for t (time in years):'))
- print ''
- ert = e**(r*t)
- answer = P*ert
- print 'A equals:'
- print answer
- elif Y == 'P' or 'p' or '2':
- print 'Solving for P'
- print ''
- A = float(raw_input('Set value for A (Final answer):'))
- e = 2.71828
- print ''
- r = float(raw_input('Set value for r (rate):'))
- print ''
- t = float(raw_input('Set value for t (time in years):'))
- print ''
- answer = A / math.e**(r*t)
- print 'P equals:'
- print answer
- elif Y == 'R' or 'r' or '3':
- print 'Solving for r'
- print ' '
- A = float(raw_input('Set value for A (Final answer): '))
- P = float(raw_input('Set value for P (initial investment):'))
- e = 2.71828
- print ' '
- t = float(raw_input('Set value for t (time in years):'))
- print ' '
- almost = A/P
- getting_there = math.log10(almost)/math.log10(e)
- answer = getting_there/t
- print 'r equals:'
- print answer
- elif Y == 'T' or 't' or '4':
- print 'Solving for t'
- print ' '
- A = float(raw_input('Set value for A (Final answer): '))
- P = float(raw_input('Set value for P (initial investment):'))
- e = 2.71828
- print ' '
- r = float(raw_input('Set value for r (rate):'))
- print ' '
- #equation here (not done yet)
- print 't equals:'
- print answer
- else:
- print 'Not yet'
- #change log to ln : log base e (x) = log base 10 (x) / log base 10 (e)
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