有理数集Trad.有理數集 yǒu lǐ shù jí set of rational numbers (math.) 有理数域Trad.有理數域 yǒu lǐ shù yù field of rational numbers (math.), usually denoted by Q Are you Studying Chinese? Become fluent in Chinese by watching Chinese videos in a video player designed for language...
5. If define the new operation ^∗ on the set of rational numbers as a∗b=-(a+b)+∣b+a∣, calculate 5∗4)∗(-5) ( )A. 7B. -10C. 10D. - 相关知识点: 试题来源: 解析 C. 10 根据题目定义的新运算,先计算 5 * 4 = -(5+4) + |5+4| = 0。 然后计算 (5 * 4)...
Step by step video & image solution for On the set Q+ of all positive rational numbers, define a binary operation * on Q+ by a*b = (ab)/(3)AA (a,b) in Q^(+). Then, find the identity element in Q for*. by Maths experts to help you in doubts & scoring excellent marks in...
Use the definition of negative numbers to prove that (-4) (-2) = 8. Determine the restricted values of y for the rational expression to be defined. \frac{2y - 3}{9y + 7} Define distributive property Determine whether the product Ax is defined or undefined. 1. A= \begin{bmatrix} ...
Kathryn teaches college math. She holds a master's degree in Learning and Technology.Cite this lesson Exponents are not always simple integers and can take the form of negative numbers or even zero. Learn to define zero and negative exponents, explore the differences in how a negative number ...
Rational Exponents Definition Of Rational ExponentsIf the power or the exponent raised on a number is in the form where q ≠ 0, then the number is said to have rational exponent. For example: More About Rational ExponentsAll the radical numbers have rational exponent. and is also called as ...