Mathjax is incorrectly rendered

I noticed that MathJax is incorrectly rendered. Here https://www.emathhelp.net/calculators/calculus-2/integral-calculator/?f=xsinx&var=&steps=on under “the integral of the cosine is …” only integral of cosine on left-hand-side and sine on the right-hand side should be red, not equal sign and -xcos(x). However, when I click “show math as tex commands”, I get – x \cos{\left(x \right)} + \color{red}{\int{\cos{\left(x \right)}…

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NoneType object has no attribute

def forecast(bank, years): class Bank: def __init__(self, name): self.name = name self.mark_cap = 0 self.acc_list = [] self.age = 0 def lend(self, principal, ann_inc): self.mark_cap -= principal def forward_year(self): self.age += 1 def back_year(self): if self.age == 0: self.age = 0 self.age -= 1 def show_high(self): print(Bank.acc_list[0]) class Account: def __init__(self, ID, password): self.ID =…

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C++: conversion from overloaded function to std::function

I have a C++ function that takes in two other functions as parameters: // ParseResult is a class with a default constructor (no arguments) ParseResult* bin_op(std::function<ParseResult*()> func_a, std::vector<std::string> ops, std::function<ParseResult*()> func_b); When I call this function the following way: bin_op(func_1, {“MOD”}, func_2); // Both func_1 and func_2 are of type ParseResult*, and take in no…

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