定义新运算:a$b=2a-b,a&b=2a-a.例如:3$2=2*3-2=4,3&2=2*2-3=1.试求:10*8,15&11,(7*8)&(9*10)的值.
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![定义新运算:a$b=2a-b,a&b=2a-a.例如:3$2=2*3-2=4,3&2=2*2-3=1.试求:10*8,15&11,(7*8)&(9*10)的值.](/uploads/image/z/3733014-30-4.jpg?t=%E5%AE%9A%E4%B9%89%E6%96%B0%E8%BF%90%E7%AE%97%3Aa%24b%3D2a-b%2Ca%26b%3D2a-a.%E4%BE%8B%E5%A6%82%EF%BC%9A3%242%3D2%2A3-2%3D4%2C3%262%3D2%2A2-3%3D1.%E8%AF%95%E6%B1%82%EF%BC%9A10%2A8%2C15%2611%2C%287%2A8%29%26%289%2A10%29%E7%9A%84%E5%80%BC.)
定义新运算:a$b=2a-b,a&b=2a-a.例如:3$2=2*3-2=4,3&2=2*2-3=1.试求:10*8,15&11,(7*8)&(9*10)的值.
定义新运算:a$b=2a-b,a&b=2a-a.
例如:3$2=2*3-2=4,3&2=2*2-3=1.试求:10*8,15&11,(7*8)&(9*10)的值.
定义新运算:a$b=2a-b,a&b=2a-a.例如:3$2=2*3-2=4,3&2=2*2-3=1.试求:10*8,15&11,(7*8)&(9*10)的值.
10*8=10
15&11=2*15-15=15
(7*8)&(9*10)=56&90=2*56-56=56
楼主,这条件有用么?还是你输入错了