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Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Enter the mathematical formula directly and click the "Next" button to get the calculation answer.
It supports mathematical functions (including trigonometric functions).
Current location：Mathematical operation > History of Mathematical Computation > Answer
Overview: 1 questions will be solved this time.Among them
☆1 equations
[ 1/1 Equation]
Work: Find the solution of equation 700000*（1+r）^-5 = 397200 .
Question type: Equation
Solution:
After the equation is converted into a general formula, there is a common factor:
( r + 1 )
From
r + 1 = 0
it is concluded that:：
r1=-1, it is the incremental root of the eqution.
Solutions that cannot be obtained by factorization:
r2≈0.119999 , keep 6 decimal places
There are 2 solution(s).
There is(are) 1 additive root(s) and 1 real solutions.(Note:additive root, generated by computer, but not suitable for this equation.)
解程的详细方法请参阅：《方程的解法》