A-Level Maths : Logarithms : Equations 3 : ExamSolutions
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@ExamSolutions thank you
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@ossielmais I was cleaning up the one term. Dividing by 1/2 is the same as multiplying the top by 2. Take 6 divided by 1/2. How many times can you fit 1/2 into 6? Answer 12 times.
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@ExamSolutions at 6:56 where log^9 x is devided by 1/2, you multiplied by 2, however you didn't multiply the WHOLE equation, only the expression to get 2log^9 x. Can you please explain what you did there?
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@mandarkm Good question. It cannot be minus because if you go back to the first line where it says log x you would get an error when you try to log it on a calculator. You cannot log a negative number. Hope that helps?
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sorry...the question is will it be plus or minus square root of 3^6 / 4??thank u for ur videos sooo much..its helpin me a lot..m from this lil country in asia called maldives
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i hav a question...for the first part do we have to plus or minus 3^6/4
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i have a found an easier solution,, if you take log4tothebase9 over so you get 3-log4tothebase9 = logxtothebase3 you get 2.369070246 = log(x)tothebase3 now if you do 3^2.369070246 = x therefore you get the same answer that you give 13.5. now i am just wondering can this rule be applied to the same sort of question or is it ancoincident
rudeboirascal11 9 months ago
@rudeboirascal11 You can apply it. There is often more than 1 way of solving an equation.
ExamSolutions 9 months ago
@ExamSolutions Hey mate, before I ask just thought I should say your site and these videos are excellent and will really get me through c2, m1 and if need be, c1 for the retake depending on my (likely not-so-good) result.. thank you!
My question is, would there be any circumstance I couldn't just use rudeboirascal11's method, as opposed to the method you've applied here??
RShahProductions 4 days ago
@RShahProductions Of course you can.
ExamSolutions 4 days ago