Let algebra in, such as 3※4=3x4-3- 1.
So X※2 equals x times 2 minus x minus 1, which is simplified as x- 1.
That is 2(x- 1)-2- 1=0. x=2.5 .
Extended data:
Mathematically, it can be understood as multiplication, which is a very simple multiplication, because there is no multiplication symbol in the function calculation on the computer, so it needs to be replaced by a symbol. ※.
In C language, it is regarded as a known operational symbol. For example, it can be calculated like this. Because a※b=3a-2b, it may be easier to understand, and 3 ※{ 4 ※. 5} is also converted into letters and written as c※(a※b)=c※(3a-2b).
The ancient Greeks used the method of adding and subtracting signs: the Diophantine diagram in ancient Greece was composed of two numbers added in parallel, and occasionally a diagonal line "∕" and a curve ""were used as the plus and minus signs respectively.
Ancient Indian: Generally speaking, there is no need for the Gaga. It was only in the third century that "Yu" was added and "+"was reduced.
China people's calculation method: In ancient China, because of the emphasis on tool calculation, general operations were carried out on calculations or abacus, and only the results were recorded, so mathematical symbols were not used, and the operations were expressed in words when recorded.