Current location - Training Enrollment Network - Mathematics courses - What number is generally used to replace the assignment method in high school mathematics?
What number is generally used to replace the assignment method in high school mathematics?
It depends on what function or occasion. First, if the denominator is not zero,

Generally, the equations of linear function and quadratic function are 0, 1,-1, 2, -2.

For fractional functions, generally take 0 (to ensure that the denominator is not zero), 1,-1 and 1/2,-1/2, etc. , and try to appear as an integer;

For trigonometric functions, those are special values, such as plus or minus ninety degrees, sixty degrees, zero degrees;

For logarithmic functions, the power of e, 1, e is generally taken, even 1/e,1/(e k) and so on.

For exponential function, it is easy to get, how to get it conveniently;

For functions with parameters, generally, except 0, 1 and-1, select values related to parameters, such as ax+3(a is non-zero) and x= 1/a, so as to eliminate parameters. Of course, there are more complicated ones that need to be observed by yourself.