JingleBells
 Name:
 Jingyi Yang
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 About:
 Self study preparing for Alevel Double Maths & Econ in Singapore
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 19
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Questions Answered

JingleBells:
Curve Sketching: for any f(x) if as x rightarrow pm infty, f'(x) rightarrow c, a constant, does that mean that it has an asymptote? f'(x) ri…
 updated 11 months ago
 1 reply
 No Medals Yet
Mathematics

G1900:
Hi all I have just joined. Do I we have to create a new study group or it's just like a regular forum for all who come and go??
…
 updated 11 months ago
 1 reply
 1 Medal
Mathematics

jjslocum3:
Hello, just joining up. Prof. Jerrison is very quick and engaging. I have a question about the proof that differentiability = continuity in …
 updated 10 months ago
 3 replies
 2 Medals
Mathematics

Montes:
In problem set 3. Exercise 2A7. how do you get the final step of the answer from 1/(1x^2) to approximately 1+x^2... Is it because of "the…
 updated one year ago
 1 reply
 1 Medal
Mathematics

JingleBells:
Hello everyone: Problem Set 2 (Unit 2. Applications of Differentiation, 2A6)
I can do it using the basic approximation formulas, i.e. f(x)…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

JingleBells:
Hi everyone, I'm doing Problems Set for revision in section 1D on limits and discontinuity 1D3 a) (x2)/(x^24) is not simplified for the p…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

HugoV65:
In the second part of problem 1D5, why do I need to go back and use the a + b = 1 of the first part? I'm still with the mindset that b can …
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

Dave.Wysocki:
i have trouble starting the videos on my laptop.
i downloaded them into itunes u but the correct order does not show. when i try to acces…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

JingleBells:
Has anyone watched Pro.Strang's Highlights of Calculus? In the video lecture on Growth Rates and Log Graphs he put down x! Does that mean th…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

JingleBells:
Problem Set 1, 1H3 (c), Can someone help me with this? The solution y=[e^x+(e^x^2+4x^x)^1/2]/2
Is there a straight forward way to deduce…
 updated one year ago
 6 replies
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Mathematics

JingleBells:
In video lecture 05 Budget Constraint around 29'30" did the Prof make a mistake in MRS mixing up the values of Pizzas and Movies at point A …
 updated one year ago
 2 replies
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Mathematics

JingleBells:
Just been doing Problem Set 1: Found a great way to think of the continuity/discontinuity of a function,j ust think of time: the only real l…
 updated one year ago
 2 replies
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Mathematics

levinotik:
So, in the very first lecture (at the beginning), the professor has "find the tangent line to y = f(x) at P = (x0, y0). Can someone explain …
 updated one year ago
 21 replies
 1 Medal
Mathematics

JingleBells:
Problem Set 1: 1D10
Show that
 updated one year ago
 5 replies
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Mathematics

Qamari:
Hi every body I want some video and text book about engineering mathematics who can help me
I cant use youtube site
 updated one year ago
 8 replies
 1 Medal
Mathematics

opendiscuss:
The slope of the graph of f(x) = x changes abruptly when x = 0. Does this
function have a derivative? If so, what is it? If not, why not?…
 updated one year ago
 3 replies
 1 Medal
Mathematics

JingleBells:
Problem Set 1A9 c) the answer only gave examples of g(x) at x=0,4,8 but any other value beyond these points don't fall on the graph at all.…
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

JingleBells:
The graph of the function y=e^(x^2/2) isn't the same as the graph of the function y=e^(x) is it because that the first expression wants a …
 updated one year ago
 10 replies
 No Medals Yet
Mathematics

AirinaLis:
I'm not sure how Δx works when it's being multiplied.
Ex. (x+Δx) (x+Δx)= ???
…
 updated one year ago
 2 replies
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Mathematics

keonlo:
Is e^x the only function that has a same derivative of itself? if yes, how to proof it?
 updated one year ago
 12 replies
 1 Medal
Mathematics

JingleBells:
Hi guys! Check out Prof. Gilbert Strang's new Calculus Highlights Videos! MIT OCW
 updated one year ago
 9 replies
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Mathematics

electricgirl4:
this is my first time doing calculus if i need help can i get it
 updated one year ago
 7 replies
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Mathematics

JingleBells:
In Video lecture 05 round about 37' where Pr. Jerison draws the f(x)=tan(x) and f(x)=arctan(x) the two curve crosses where if I plug in real…
 updated one year ago
 11 replies
 1 Medal
Mathematics

aniruddh:
can anybody tell me how to download mit videos
…
 updated one year ago
 7 replies
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Mathematics

JingleBells:
Hiya, anyone else here using these videos to prepare for CIE Alevels?
 updated one year ago
 10 replies
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Mathematics

Muz333:
Hi there, bit of a strange one this. I'm a biologist about to start a PhD in a field of work that requires a certain level of mathematics.
…
 updated one year ago
 2 replies
 1 Medal
Mathematics