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mathgenerator/mathgenerator/funcs/algebra/combine_like_terms.py
2021-10-06 02:22:32 -04:00

48 lines
1.4 KiB
Python

from .__init__ import *
def likeTermCombineFunc(maxCoef=10, maxExp=20, maxTerms=10, format='string'):
numTerms = random.randint(1, maxTerms)
problem = ""
solution = ""
for i in range(numTerms):
if i > 0:
problem += " + "
solution += " + "
coefficient = random.randint(1, maxCoef)
exponent = random.randint(1, max(numTerms - 1, 2))
problem += str(coefficient) + "x^" + str(exponent)
solution = combineTerms(problem)
if format == 'string':
return problem, solution
else:
return problem, solution
def combineTerms(string):
each_terms = string.split("+")
dict_power_wise_terms = {}
for i in range(11):
dict_power_wise_terms[i] = []
for term in each_terms:
term = term.split("^")
appendee = term[0].split("x")[0]
if len(term) == 1:
dict_power_wise_terms[1].append(int(appendee))
else:
dict_power_wise_terms[int(term[1])].append(int(appendee))
final_string = ''
for i in range(11):
if len(dict_power_wise_terms[i]) != 0:
total = sum(dict_power_wise_terms[i])
final_string += str(total) + "x^" + str(i) + " + "
final_string = '+'.join(final_string.split("+")[:-1])
return final_string
combine_like_terms = Generator("Combine Like terms", 105,likeTermCombineFunc, ["maxCoef=10", "maxExp=20", "maxTerms=10"])