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Questions Answered

KJ4UTS:
Group Title
23° 20' 48" is the same as ____ °. Round to the nearest hundredth of a degree.
Please explain.
 updated 16 hours ago
 12 replies
 3 Medals
Mathematics

Concentrationalizing:
Group Title
Suppose r, s are elements of the real numbers. Prove the following:
1. r is an element of the rational numbers and (r+s) is not rational i…
 updated 15 hours ago
 134 replies
 4 Medals
Mathematics

karahgrace:
Group Title
what is the counterexample of If the product of two numbers is positive, then the two numbers must be positive
 updated 18 hours ago
 1 reply
 No Medals Yet
Mathematics

darkasnight:
Group Title
Find the inverse of f(x)=x5x^2 , x is greater than or equal to 1
 updated 18 hours ago
 2 replies
 1 Medal
Mathematics

lawls:
Group Title
x−1/x =x What is x equal to? (hint: pair of conjugate complex solutions)
 updated 19 hours ago
 2 replies
 No Medals Yet
Mathematics

kaylady21:
Group Title
Help please!!!! Rotated Ellipse with the equation x^(2)+xy+y^(2)=1. Find all the points where the tangent line is horizontal. Then find all …
 updated 8 hours ago
 40 replies
 1 Medal
Mathematics

TylerD:
Group Title
eval the limit
 updated 20 hours ago
 28 replies
 3 Medals
Mathematics

daniel9511:
Group Title
please help me with this: (
linear differential equations)
ydx4(x+y^6)dy=0
 updated 18 hours ago
 16 replies
 No Medals Yet
Mathematics

jmel_09:
Group Title
of all rectangles that have a perimeter of 34 ft, find the dimension with the largest area? What is its area?
 updated 20 hours ago
 106 replies
 No Medals Yet
Mathematics

DarkBlueChocobo:
Group Title
Help with equation please
 updated 21 hours ago
 44 replies
 5 Medals
Mathematics

akeith15:
Group Title
Use an appropriate Riemann sum to evaluate the limit
lim((1^5 + 2^5 + 3^5 + ... + n^5)/ (n^6)) as n > infinity
 updated 22 hours ago
 16 replies
 1 Medal
Mathematics

CoolGuy13:
Group Title
http://gyazo.com/163468d4e9e0aea99c499907679bef2c @mathmath333
 updated 22 hours ago
 17 replies
 1 Medal
Mathematics

rsummers161618:
Group Title
2sin^2x+sinx=1
 updated 23 hours ago
 2 replies
 No Medals Yet
Mathematics

abey:
Group Title
Find x, if f(x) = 12 and f(x) = 3x.
…
 updated 23 hours ago
 7 replies
 1 Medal
Mathematics

mateosa:
Group Title
Why does 1+12e^(x)=e^(x) simplify to x=ln(4)?? Thanks
 updated 23 hours ago
 3 replies
 2 Medals
Mathematics

corose:
Group Title
find the derivative of f(x)= 2^cot^2(3x^3+5)base e^5x^2. Hint: cot^2(x)=(cot(x))^2 (Do not simplify!) (Step by step)
 updated 23 hours ago
 6 replies
 1 Medal
Mathematics

Megaforte8600:
Group Title
Find X
10^(2x) + 10^x = 20
…
 updated 23 hours ago
 30 replies
 1 Medal
Mathematics

inspirechey:
Group Title
Using the graph below, calculate the average rate of change for f(x) from x = 2 to x = 6.
exponential function going through points 2, 2 …
 updated 23 hours ago
 16 replies
 No Medals Yet
Mathematics

GWiz:
Group Title
Find dx/dy of y=(x+sqrt(x))^2
 updated 23 hours ago
 14 replies
 1 Medal
Mathematics

raeluvpop:
Group Title
Which of the following starts with a contradiction of what you are trying to prove?
…
 updated yesterday
 10 replies
 2 Medals
Mathematics

Loser66:
Group Title
1+ 1/3+ 1/9+....+1/3^(n1) < 3/2??
Please, help
 updated yesterday
 14 replies
 No Medals Yet
Mathematics

rysuh:
Group Title
Suppose that f(x) is a function with f(105)=25 and
f '(105)=4. Estimate f(106).
Not sure how to go about this problem..
 updated yesterday
 3 replies
 1 Medal
Mathematics

Sab.Henderson:
Group Title
Use linear approximation, i.e. the tangent line, to approximate 1/.501 as follows: Let f(x)=1/x and find the equation of the tangent lin…
 updated yesterday
 4 replies
 No Medals Yet
Mathematics

undeadknight26:
Group Title
Derive the equation of the parabola with a focus at (2, 4) and a directrix of y = 8.
f(x) = −one eighth (x − 2)2 + 6
…
 updated yesterday
 23 replies
 2 Medals
Mathematics

tonybynum1:
Group Title
All fish swim.
A barracuda is a fish.
…
 updated yesterday
 2 replies
 No Medals Yet
Mathematics

adekker:
Group Title
Find the exact value of tan (arcsin (2/5)). For full credit, explain your reasoning. (PS can't see the chart/drawing attachments)
 updated 23 hours ago
 2 replies
 No Medals Yet
Mathematics

pookie0799:
Group Title
Find f(5) for this sequence:
f(1) = 2 and f(2) = 5, f(n) = f(1) + f(2) + f(n  1), for n > 2.
…
 updated yesterday
 20 replies
 No Medals Yet
Mathematics

preciousmcleemulibana:
Group Title
for what value of K will the equation 3x^2=K2x have real roots?
 updated yesterday
 3 replies
 1 Medal
Mathematics

avemariab93:
Group Title
Find the differential dy of the given function. (Use "dx" for dx.)
y = xsqrt(9 − x^2)
…
 updated 16 hours ago
 4 replies
 4 Medals
Mathematics

HatcrewS:
Group Title
How to show x.y.(ln x) = (ln y) ?
x times y times (ln x) equals to (ln y)
 updated yesterday
 32 replies
 3 Medals
Mathematics
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