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MarkFL
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MarkFL
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Join Date
11-24-2012
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07:06 PM
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09-09-2018,
03:41 PM
MarkFL
replied to a thread
Finding Vector A having same direction as <-6,7,6> but a length of 3
in
Calculus
Instead of multiplying the given vector by 3, you want to multiply by: \dfrac{3}{\sqrt{(-6)^2+7^2+6^2}}=\,?
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3 replies | 103 view(s)
09-09-2018,
12:22 AM
MarkFL
replied to a thread
Week 2 of Calculus: Find eqn of tangent to y = ln(x) at x = 1, using estimation
in
Calculus
You were told to estimate the following limit: \displaystyle L=\lim_{x\to1}\frac{\ln(x)}{x-1} And you correctly estimated that: L=1 This...
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10 replies | 284 view(s)
08-24-2018,
11:18 PM
MarkFL
replied to a thread
Can -3sin(x)sin(2x)+2cos(x)cos(3x) be simplified any further?
in
Geometry and Trig
It appears to be correct now. \displaystyle \frac{d}{dx}\sin(u(x))=\cos(u(x))\cdot\frac{d}{dx}u(x) \displaystyle...
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9 replies | 379 view(s)
08-24-2018,
03:15 AM
MarkFL
replied to a thread
We're on Our Own Now
in
News
Yes, vB 4.2.5 is the last version of the 4.x series that will be offered. Supposedly there will be security patches made available if the need...
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3 replies | 352 view(s)
08-21-2018,
10:31 AM
MarkFL
replied to a thread
did I solve this correctly? I get x = 1, 4 for (x^2 - 5x + 5)^3 = 1
in
Intermediate/Advanced Algebra
We are given so solve: \displaystyle \left(x^2-5x+5\right)^3=1 We could arrange this as a difference of cubes: \displaystyle...
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11 replies | 448 view(s)
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About MarkFL
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Date of Birth
October 11, 1963 (54)
About MarkFL
Location:
St. Augustine, FL.
Interests:
Math, Physics, Trombones, Performance Cars, vBulletin Coding
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Living in the pools, They soon forget about the sea...— Rush, "Natural Science" (1980)
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