tag:blogger.com,1999:blog-4070093898860344889.post7905680625654775400..comments2023-06-12T18:21:58.820+08:00Comments on 2013 S3-05 Maths Blog: INDICES & SURDS - The Mistake Fragment part 2Jemaimahhttp://www.blogger.com/profile/09590012484957429518noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-4070093898860344889.post-45423850398330354942013-02-07T06:07:18.582+08:002013-02-07T06:07:18.582+08:001) No mistake
2) Multiplying (1.3)^t by 10 ≠ (13)^...1) No mistake<br />2) Multiplying (1.3)^t by 10 ≠ (13)^t. Cannot just multiply 1.3 alone, have to multiply it after solving 't' and solving 13^t.<br />3) Exponents cannot be added or multiplied when the equations are being added or subtracted. Only works with multiplication and division<br />4) Can only get 2x+1 when (√2x+1)^2. In this case, its (√2x+1) + (√2x+1). Therefore (√2x+1) + (√2x+1) ≠ 2x+1<br />5) Square root applies for all terms in the bracket, not just for x. Enoch Yanghttps://www.blogger.com/profile/12471566480374606258noreply@blogger.comtag:blogger.com,1999:blog-4070093898860344889.post-32369816860213065322013-02-06T20:59:50.838+08:002013-02-06T20:59:50.838+08:001) When the terms are multiplied, the power has to...1) When the terms are multiplied, the power has to be added, not multiplied. <br /><br />2) You must solve the bracket first, thus solve (1.3)^t then multiply the answer by 10. <br /><br />3) You can only add / subtract the powers if it is multiplied / divided respectively. <br /><br />4) You can only get that by multiplying, but in this case the answer should be 2(√2x+1).<br /><br />5) Square root is for all the terms, you cannot just put it for x. LiuGuoJinhttps://www.blogger.com/profile/09163267645568170181noreply@blogger.comtag:blogger.com,1999:blog-4070093898860344889.post-90678661681824096212013-02-05T22:48:22.185+08:002013-02-05T22:48:22.185+08:001) When indices are multiplied they should be adde...1) When indices are multiplied they should be added. <br /><br />2) The exponent t must be added to 1.3 first, before multiplying by 10. <br /><br />3) Exponent cannot be added during addition, it can only be so when multiplying.<br /><br />4) √2x+1 multiplied by itself will give you 2x+1, addition of two equal square root does not apply.<br /><br />5) Square root applies to h also, it should be √h/h, not h/h.Chen Hao Xianhttps://www.blogger.com/profile/12225166870718421138noreply@blogger.comtag:blogger.com,1999:blog-4070093898860344889.post-79129348770652513722013-02-05T21:37:55.961+08:002013-02-05T21:37:55.961+08:001. When multiplying indices, indexes should be add...1. When multiplying indices, indexes should be added, not multiplied.<br />2. In 10(1.3)^t, 10 is being multiplied with 1.3^t, the index cannot be excluded, then put back in after calculation.<br />3. Indexes cannot be added during addition of indices, the equation has to be factorised.<br />4. The square root is multiplied by each other instead of added.<br />5. Square root is applied to the whole equation, cannot be separated into just a square root of x.luke-john leehttps://www.blogger.com/profile/16998196081287221029noreply@blogger.comtag:blogger.com,1999:blog-4070093898860344889.post-32565930267426615332013-02-05T21:17:23.451+08:002013-02-05T21:17:23.451+08:001) Error in usage of the law of indices (When mult...1) Error in usage of the law of indices (When multiplying indices, exponents have to be added, not multiplied)<br /><br />2) Error in order of operations: In 10(1.3)^t, the multiplier 10 is multiplying 1.3^t, not just 1.3.<br /><br />3) Error in usage of Laws of indices (Laws of indices do not apply to addition)<br /><br />4) Error in manipulation of square root (square roots must be multiplied by itself, not just added, to make the expression rational)<br /><br />5) Careless error (Square root applies to the entire expression (x-1+h) and also (x-1), it is not possible to remove the square roots from only certain numbers immediately.)Anonymoushttps://www.blogger.com/profile/06905317595557509399noreply@blogger.com