199 reputation
312
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location United Kingdom
age 36
visits member for 2 years, 4 months
seen Jan 27 at 21:56

About to learn C++. Expect more questions! Gears of War is the best game ever!


Jan
7
comment Proof that $e^x$ can be expressed in a series of ascending powers of $x$
@copper.hat Apologies if I'm not clear. The phrasing the book uses suggests that there is a general proof that $e^x$ can be expressed as a series
Jan
7
comment Proof that $e^x$ can be expressed in a series of ascending powers of $x$
@Alex Just checked on wikipedia. The definition in the question is correct(?) en.wikipedia.org/wiki/Exponential_function#Formal_definition
Jan
7
comment Proof that $e^x$ can be expressed in a series of ascending powers of $x$
@Alex I didn't quote directly from the book, it's just my memory failing me. Will edit
Dec
3
comment Differentiation with the quotient rule
@AlexR Well I have to say, this is the first time two of my errors have cancelled each other out. I wish it would happen more often... Thank you both for your help :)
Dec
3
comment Differentiation with the quotient rule
Actually...yes, you are right. But I still managed to come out with the correct answer...
Dec
3
comment Differentiation with the quotient rule
But $v = 1+2x$, not $\sqrt{1+2x}$
Dec
3
comment Differentiation with the quotient rule
Ah, I see now. Thank you for your help :)
Nov
11
comment Finding the coefficient of $x^{10}$
I thought this might be the case. I was going to multiply out with the $x^{10}$ but the word "hence" threw me. Thought I would check with people better at maths than me. Thanks for your help.
Nov
11
comment Finding the coefficient of $x^{10}$
@AlexR Ah. Sorry about that, my stupidity. Will correct.
Sep
21
comment Find the range of values that $x$ can take if $9 \log_x5 = \log_5x$
Thank you very much! :)
Sep
8
comment Equation with the discriminant
Does that mean the question is wrong...?
Sep
8
comment Equation with the discriminant
The last line of your solution does not match my question - I need $1-n^2$ instead of $1 + n^2$
Sep
8
comment Equation with the discriminant
@Vikram That was a mistake in my typing sorry. Will fix
Jul
29
comment Common logarithm question
I can't believe that I forgot that :facepalm:. Thanks very much for your help though, I will accept your answer when I can
Jul
29
comment Common logarithm question
Thanks for your answer, but I don't understand why $\frac{10}{10^{1/3}} = 10^{1-1/3}$. Probably me being a moron, but I don't understand how you got there.
Jul
29
comment Common logarithm question
@DavidMitra I got as far as $10(10^{-\frac13})$ but don't know where to go from there
May
20
comment GCSE maths question concerning indices
@Paul I hope so. Unfortunately many of the examiners aren't maths teachers so may only mark an answer correct if it's on the mark scheme. You never know, maybe that solution is one there.
May
20
comment GCSE maths question concerning indices
Thanks for the answer, I realize now that didn't realize I needed to convert $8^y$ to $(2^3)^y$. My stupidity surprises me sometimes xD
May
20
comment GCSE maths question concerning indices
@Paul I quite literally just slumped to the floor. I cannot believe that i missed that >.<
May
15
comment Proving the quadratic formula (for dummies)
thank you! Maths is not my strong point :)