Question

规定一种新运算：a△b=ab-a-b+1，如3△4=3×4-3-4+1，请比较大小（－3）△4（ ）4

急需答案

Answer 1

用Action Script 2.0（Flash MX 2004 或 Flash 8）：
var a = -3;
var b = 4;
var c;
var d;
function △() {
c = a * b - a - b + 1;
if (c > 4) {
trace (c + ">" + "4");
}
if (c < 4) {
trace (c + "<" + "4");
} else {
trace (c + "=" + "4");
}
}
△();

Answer 2

（－3）△4（ ）4
解：（-3）△4=-3x4-(-3)-4=-12+3-4=-13
-13<4