题目

Although he is very busy with his business, he always keeps ________ (有规       律的) working hours.   答案：regular如图，该框图实现的是求方程ax+b=0(a、b为常数)的解. 问：该框图正确吗？若不正确，请问它是哪一个问题的程序框图？应怎样修改？写出正确的算法及程序框图.