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For all real numbers p and r, p◇r= pr- p+r.Column A Column B
For all real numbers p and r, p◇r= pr- p+r.Column A Column B
游客
2024-01-12
70
管理
问题
For all real numbers p and r, p◇r= pr- p+r.
Column A Column B
(-4)◇5 5◇(-4)
选项
A、if the quantity in Column A is greater
B、if the quantity in Column B is greater
C、if the two quantity are equal
D、if the relationship cannot be determined from the information given
答案
A
解析
对于所有的实数(real number)p和r,有p◇r=pr-p+r成立。
解:本题的正确答案为(A)。◇表示一种函数运算法则,解答该题只要将数据代入表达式进行计算就可以了:(一4)◇5=-4×5-(-4)+5=-11;5◇(-4)=5×(-4)-5+(-4)=-29
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