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Wilmer
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Today,
16:03
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
No, but there is an algebraic simplification that can be made in the expression you posted for the derivative of the product $uv$. :D
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12 replies | 137 view(s)
Today,
15:23
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
Yes...can you simplify? :D
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12 replies | 137 view(s)
Today,
12:02
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
Let's look at: x=\cos(v) Implicitly differentiating w.r.t $x$, we obtain: 1=-\sin(v)\d{v}{x}\implies \d{v}{x}=-\frac{1}{\sin(v)} Now,...
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12 replies | 137 view(s)
Yesterday,
19:05
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
You need to treat $v$ as a function of $x$, and therefore use the chain rule...
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12 replies | 137 view(s)
July 18th, 2017,
19:42
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
Yes, that's much better. (Yes) Okay, now let's look at: x=\cos(v) What do you get when you implicitly differentiate w.r.t $x$?
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12 replies | 137 view(s)
July 18th, 2017,
19:13
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
How did you obtain that result?
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12 replies | 137 view(s)
July 18th, 2017,
14:54
MarkFL
replied to a thread
242.7x.25 Find the derivative of y with respect to x
in
Calculus
The second term is a product, so we'll need to use the Product Rule to differentiate it. The first factor could be written as: ...
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12 replies | 137 view(s)
July 18th, 2017,
14:19
MarkFL
replied to a thread [SOLVED]
7.t.27 Write an equation for a sinusoidal graph with the following properties:
in
Trigonometry
My mind must've been on something other than this problem when I posted last night...$A=-3$ is not saying the amplitude is -3...so what I would give...
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3 replies | 90 view(s)
July 18th, 2017,
13:25
MarkFL
replied to a thread
Joint probabilty integral boundaries understanding.
in
Advanced Probability and Statistics
W|A refers to Wolfram|Alpha: plot |x+y| < 0.5 on
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6 replies | 100 view(s)
July 17th, 2017,
23:30
MarkFL
replied to a thread
Find the nth derivative
in
Challenge Questions and Puzzles
My solution: We have: f(x)=\frac{\ln(x)}{x} Now, let's look at a few base cases to see if a pattern emerges: ...
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2 replies | 69 view(s)
July 17th, 2017,
21:54
MarkFL
replied to a thread [SOLVED]
7.t.27 Write an equation for a sinusoidal graph with the following properties:
in
Trigonometry
The amplitude of a sinusoidal function is one-half the vertical distance between the minimum and maximum, and so should never given as a negative...
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3 replies | 90 view(s)
July 15th, 2017,
02:22
MarkFL
replied to a thread
Welcome New MHB Site Helper Albert!
in
Announcements
Okay... (Giggle)
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7 replies | 201 view(s)
July 14th, 2017,
14:13
MarkFL
replied to a thread
Welcome New MHB Math Helper skeeter!
in
Announcements
Congratulations, and welcome to the team, skeeter! (Yes)
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7 replies | 192 view(s)
July 14th, 2017,
14:11
MarkFL
replied to a thread
Welcome New MHB Math Helper Joppy!
in
Announcements
Congratulations and welcome to the team, Joppy! (Yes)
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7 replies | 177 view(s)
July 14th, 2017,
13:10
MarkFL
replied to a thread
Welcome New MHB Site Helper Albert!
in
Announcements
Congratulations and welcome to the team, Albert! (Yes)
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7 replies | 201 view(s)
July 14th, 2017,
11:30
MarkFL
replied to a thread
Distance between point and line
in
Geometry
The family of lines passing through the origin may be written: Ax+y=0 where the slope is $-A$. Now you will have only 1 variable in your...
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1 replies | 82 view(s)
July 14th, 2017,
01:20
MarkFL
replied to a thread
Welcome New MHB Site Helper lfdahl!
in
Announcements
You've contributed to MHB in a very positive way, and your contributions are greatly appreciated...thank you for making MHB a better place for...
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7 replies | 168 view(s)
July 13th, 2017,
14:15
MarkFL
replied to a thread
Welcome New MHB Site Helper lfdahl!
in
Announcements
Congratulations and welcome to the team, lfdahl! (Yes)
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7 replies | 168 view(s)
July 11th, 2017,
19:06
MarkFL
replied to a thread
Work Application
in
Pre-Calculus
Yes...I concur. :D
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9 replies | 265 view(s)
July 11th, 2017,
15:55
MarkFL
replied to a thread
Work Application
in
Pre-Calculus
Good...and so if 19/30 of the job remains and it takes B 30 days to complete the entire task, how long will it take for B to complete the 19/30 of...
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9 replies | 265 view(s)
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