演算法筆記- Number

比如多項式乘法： Symbolic Computation: (x+1)(3y+2) = 3xy + 2x + 3y + 2 Numerical Computation: x = 2, y = 1 (2+1)*(3*1+2) = 3*(3*1+2) = 3*(3+2) = 3*5 = 15.

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