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Questions Answered

elizabethann509:
In an inequality, if the number is already negative and when I solve it it's still negative do I have to flip the sign?
For example:
…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

mariacampbell28:
Select the property that allows the statement 3 = x to be written x = 3.
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

frx:
Let \[f(x) = x^2  2x +1 \] use the epsilondelta definition to show that: \[\lim_{x \rightarrow 3} f(x) = 4\]
I've come up with this:
…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

chrsimmo:
Does anyone know how to solve this equation:
y+ln(y)=1
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

chrisjas:
Hi can someone please help me with the following derivative: y = (sec x +3 ln tan x)^1/4.
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

chrisjas:
Hi can someone help me with the following derivative: y=(sec x + ln tan x)^1/4.
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

nexis:
Why is ln(1/2) = ln(2)
http://ocw.mit.edu/courses/mathematics/1801scsinglevariablecalculusfall2010/partbimplicitdifferentiatio…
 updated one year ago
 3 replies
 2 Medals
Mathematics

MartinLaw:
I am struggling to figure out the 1F7B/C questions in problem set 1, the solution given is not helping me and I can't even begin to see th…
 updated one year ago
 3 replies
 2 Medals
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
 No Medals Yet
Mathematics

david1984:
session 1: worked Example : with Mathlet : I dont understand the (C) part of every 3 questions ( from question 1 to 3 ).How to find the valu…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

TiaW:
Which of the following is the rational exponent expression of http://learn.flvs.net/webdav/assessment_images/educator_algebra2_v10/04_04c_04…
 updated one year ago
 4 replies
 1 Medal
Mathematics

Frankk:
I'm checking MIT maths course and I'm currently studying Implicit Differentiation and Inverse Functions (http://ocw.mit.edu/courses/mathemat…
 updated one year ago
 1 reply
 1 Medal
Mathematics

Myammecutie:
Together a computer, monitor, and printer cost $1,935. The monitor cost $400 less than the computer, and the printer cost $50 more than the …
 updated one year ago
 18 replies
 1 Medal
Mathematics

BabyBoy1:
There are two consecutive even numbers such that six times the smaller number minus five times the greater number is 2. What is the small…
 updated one year ago
 3 replies
 1 Medal
Mathematics

nexis:
If someone could explain the answer to 1J2 on the first assignment (http://ocw.mit.edu/courses/mathematics/1801scsinglevariablecalculus…
 updated one year ago
 5 replies
 2 Medals
Mathematics

phatman:
how does one determine MULTIPLE min/max points in a periodic function?
 updated one year ago
 1 reply
 2 Medals
Mathematics

joneshead:
Sum of rectangles inequality: In the definition of the integral of x^2 between 0 and b, a geometric example was used. The largest square pyr…
 updated one year ago
 2 replies
 1 Medal
Mathematics

Kumbakonam:
In session 15 recitation video (Graphing the Arctan Function), can you guys tell me the detailed solution of using \frac{d}{dx} \tan{x} = \s…
 updated one year ago
 4 replies
 1 Medal
Mathematics

unkabogable:
Find the dimensions of largest rectangle w/ maximum area inscribed in a semicircle with radius r.
What equations am I gonna use in here? He…
 updated one year ago
 3 replies
 No Medals Yet
Mathematics

Scott*:
Stuck on the algebra portion of 2C13.
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

Luvgunn:
I need more work on antiderivatives. Any suggestions on where to find more exercises?
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

Scott*:
I looking for direction on this question: 1A6: Express in the form Asin(x+c). For a) sinx +√3cosx & b) sinxcosx. I'm thinking I need the …
 updated one year ago
 2 replies
 2 Medals
Mathematics

lukeryberg21:
Hey guys, do the solutions for the final exam exist? Or, where can I get solutions to check my answers? I have just completed the final on m…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

eamier:
prove that the derivative of log x base a equal to1/(a log x)
 updated one year ago
 1 reply
 1 Medal
Mathematics

kozlowse:
How do you solve final exam question 3b? lim as x >3^.5 of (arctan(x)  pi/3) / (x  3^.5)?
 updated one year ago
 2 replies
 1 Medal
Mathematics

christianm:
In this example from Session 54 (end of the first video excerpt), the lecturer switches the order of integration and a negative sign at the …
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

christianm:
Hi,
I'm a little confused about the recitation in Session 15 (Derivative of the Arccos function). Why does Joel draw the angle arccos(x) …
 updated one year ago
 1 reply
 1 Medal
Mathematics

mrjoules:
what is the difference between capital delta y/capital delta x and dy/dx?
 updated one year ago
 4 replies
 1 Medal
Mathematics

Mtakle:
I'm working problem set 2  1H1. I get part a, but cannot understand part b. I don't understand where the equation for lamda came from in…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics

nickb:
Section 1, Part A, Session 4 worked example: why does sin2x derive to 2cos2x? I don't understand any process that would benefit from somehow…
 updated one year ago
 1 reply
 No Medals Yet
Mathematics
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