My name is John. I am a 68 year old retiree who enjoys working with high school students to improve their algebra and geometry skills. I have been doing on-line tutoring for 4 years and believe I’ve helped several students improve their grades while also keeping my own cognitive skills refreshed in retirement. (read more)
...I've seen that students usually need the most help in these areas, so over the years I have developed a wide range of lessons and activities in math and writing. My experience teaching GED classes and my familiarity with all the subject areas it covers are my qualifications for tutoring students looking to take the test. But it's my approach that makes the difference. (read more)
...Notice that m and n are equal elements of A, and that (m, n) ? (R n R-1). Therefore, ? (m, n) ? (R n R-1), (m, n) ? {(a, a): a ? A}. Thus, by definition of subset, (R n R-1) ? {(a, a): a ? A}. Therefore, if R on A is antisymmetric, R n R-1 ? {(a, a): a ? A}.
It has been shown that if R n R... (read more)