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R
reggiwilliams
posted the thread
Compound Interest Financial Maths
in
Finance/Business Math
.
In the course of revising financial maths came across this question which took me longer than usual to get to answer I attach question...
12 minutes ago
A
annaanna
replied to the thread
Vectors in equilibrium: A body is acted on by 3 forces in the (x,y)-plane. T_3 = 30.0j N, angle is 20.0 degrees, body is at equilibrium
.
I was doing the question again and realised that I first rounded 10.64 to 2 s.f then was like "oh I need 3 s.f" and would round it to...
Today at 5:03 AM
A
annaanna
replied to the thread
Vectors in equilibrium: A body is acted on by 3 forces in the (x,y)-plane. T_3 = 30.0j N, angle is 20.0 degrees, body is at equilibrium
.
Oh I did, but the answer isn't 11 or 11.0
Today at 3:16 AM
The Highlander
replied to the thread
Please help with this: In triangle XYZ, side y is 8cm, side z is 5cm, and the measure of angle Y is 75 deg; find the length of side x
.
Referring to your (modified) picture, below, (qv)... In the circled section there is only one thing you don't know, so you can easily...
Today at 1:03 AM
M
mario99
replied to the thread
Please help me understand and solve the second-order DM: yy" + y = (y')^2
.
The trick here is: Let u(y) = y' This is the same as u(y(x)) = y'(x)
Yesterday at 9:38 PM
M
mario99
reacted to
Dr.Peterson's post
in the thread
calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point?
with
Like
.
@mario99's advice provides a good hint, assuming that what "clear discontinuity point" means is a point at which there is a...
Yesterday at 9:35 PM
Dr.Peterson
replied to the thread
calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point?
.
@mario99's advice provides a good hint, assuming that what "clear discontinuity point" means is a point at which there is a...
Yesterday at 8:55 PM
M
mario99
replied to the thread
calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point?
.
If \displaystyle y = \frac{x^2 + 3x}{x + a}, then they want you to factor the numerator and cancel some of it with the denominator...
Yesterday at 7:29 PM
M
mario99
reacted to
fresh_42's post
in the thread
Pi Day, 3.14 approximation
with
Like
.
Nice area.
Yesterday at 7:17 PM
topsquark
replied to the thread
Vectors in equilibrium: A body is acted on by 3 forces in the (x,y)-plane. T_3 = 30.0j N, angle is 20.0 degrees, body is at equilibrium
.
T_1 is 11 N. (To 2 sig digs.) You left off a sin(20) on line 6 on the right. -Dan
Yesterday at 6:30 PM
blamocur
replied to the thread
f(x) = sqrt( (e^x) - 1 ): find the domain, find 1st and 2nd derivatives, and test for concavity
.
Multiplying both numerator and denominator by 2\sqrt{e^x-1} worked better for me.
Yesterday at 5:52 PM
blamocur
reacted to
stapel's post
in the thread
calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point?
with
Like
.
What you have posted means the following: \qquad y = \dfrac{x^2 + 3x}{x} + a Was this what you meant? Because, if so, I can understand...
Yesterday at 5:43 PM
stapel
replied to the thread
f(x) = sqrt( (e^x) - 1 ): find the domain, find 1st and 2nd derivatives, and test for concavity
.
I get the same result. Now try simplifying the second half of the expression by breaking the one fraction into two: \qquad...
Yesterday at 5:12 PM
Dr.Peterson
replied to the thread
How would you solve positive integer adding to a certain number questions.
.
I think you're saying that the last paragraph is someone else's explanation, and you don't understand it. Can you tell us more...
Yesterday at 5:04 PM
stapel
replied to the thread
calculus problem: For which non-negative values of a does the function y=(x^2+3x)/x+a have a clear discontinuity point?
.
What you have posted means the following: \qquad y = \dfrac{x^2 + 3x}{x} + a Was this what you meant? Because, if so, I can understand...
Yesterday at 5:00 PM
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