tag:blogger.com,1999:blog-7991892050140229718.post9134342628665225411..comments2023-06-21T01:46:06.810-07:00Comments on 2013 S3-09 Maths Blog: Quadratic - Practice 13 (Farrell Nah)farrellnahhttp://www.blogger.com/profile/12822697736062086588noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-7991892050140229718.post-32891717483444483752013-03-11T21:51:29.953-07:002013-03-11T21:51:29.953-07:00a) Graph makes the working quite clear, it shows t...a) Graph makes the working quite clear, it shows the link between the concept of real and equal roots and the question.<br /><br />b) Simple and clear working, rather easy to understand<br /><br />Generally, your working is quite well-organized and easy to understandAnonymoushttps://www.blogger.com/profile/06905317595557509399noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-4931795993677703722013-03-11T21:50:17.152-07:002013-03-11T21:50:17.152-07:00- Mathematical concept is clearly shown.
- Clarity...- Mathematical concept is clearly shown.<br />- Clarity of explanation is understandable<br />- Organization of thoughts are shown. Esther Tieyhttps://www.blogger.com/profile/09544310589577435783noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-68416181525796347432013-03-11T21:49:35.386-07:002013-03-11T21:49:35.386-07:0013a. Clear and good explanation, no concept errors...13a. Clear and good explanation, no concept errors and is neat<br /><br />13b. Clear and good explanation, no concept errors, work is neat.Yi Dehttps://www.blogger.com/profile/01387087298856162338noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-39963581810735206402013-03-11T21:42:44.183-07:002013-03-11T21:42:44.183-07:00Explanation is quite clear and good use of a graph...Explanation is quite clear and good use of a graph Tobias Tanghttps://www.blogger.com/profile/17823185465007666136noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-19786917478431073732013-03-11T18:29:08.134-07:002013-03-11T18:29:08.134-07:0013a) Clear explanation with the aid of a diagram o...13a) Clear explanation with the aid of a diagram of a graph.<br /><br />13b) Good explanation, however it may be good to label by the side which value you are subbing into it. ryan tznhttps://www.blogger.com/profile/03359706665764782854noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-43446165388166363352013-03-11T18:28:58.667-07:002013-03-11T18:28:58.667-07:00Answers are clear and systematic There is no conce...Answers are clear and systematic There is no conceptual error. Explanation is alright, it can be clearer, though. However, it is quite well done. Overall, good job.♪ Jemima ♫https://www.blogger.com/profile/00456984701779763324noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-47434142825898140402013-03-11T18:27:35.283-07:002013-03-11T18:27:35.283-07:00The graph and so on shows me your understanding of...The graph and so on shows me your understanding of the question. The paper can be neater and the steps can be more clearly shown.Wee Chang Han (章瀚19)https://www.blogger.com/profile/10707406764645598420noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-17740593166138775972013-03-11T18:27:15.947-07:002013-03-11T18:27:15.947-07:00Explanation is clear for both parts of the questio...Explanation is clear for both parts of the question. No conceptual error. Answers are quite well organised.Lee Kai Enhttps://www.blogger.com/profile/12132999420164870155noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-67183606081654589382013-03-11T18:26:20.716-07:002013-03-11T18:26:20.716-07:0013a) Does not mathematically show how -3k^2+2k+1=...13a) Does not mathematically show how -3k^2+2k+1=0 works out to k=-1/3 or 1, Not very organized, says b^2-4ac = 0 3 times. <br /><br />13b) Concept not clear as he does not say which value of k to substitute and where it is substituted. Again, he does not show how the quadratic equation is solved. Work is organized and clear enough to understandOOOPhttps://www.blogger.com/profile/11628225671877704503noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-72675045863266945792013-03-11T18:26:00.123-07:002013-03-11T18:26:00.123-07:00This comment has been removed by the author.Chin_Wai KIthttps://www.blogger.com/profile/12773245688494336549noreply@blogger.comtag:blogger.com,1999:blog-7991892050140229718.post-68583464847614155582013-03-11T18:25:47.931-07:002013-03-11T18:25:47.931-07:0013a) The explanation is very clear and succinct an...13a) The explanation is very clear and succinct and has a diagram to further help explain why the equation has real and equal roots. <br /><br />13b) The explanation is also very clear although some people may not understand why the substitution is necessary. Chin_Wai KIthttps://www.blogger.com/profile/12773245688494336549noreply@blogger.com