Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Latest activity
Register
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
BvU's latest activity
BvU
reacted to
Lnewqban's post
in the thread
Correct statement related to common tangents of circles
with
Like
.
If you draw a diagram with very different radii, you could easily see the right answer. Also, for answering (i), draw the radius that...
May 28, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
Yes, see #8: the hex representation of the smallest number > 2 is 40000001 I have muddied the waters by a practical interpretation --...
May 17, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
The question is then: does the problem statement in #1 include this rounding (which is demonstrated in practice in the last block in #8...
May 17, 2024
BvU
reacted to
pbuk's post
in the thread
Comp Sci
IEEE-754 Precision Format
with
Like
.
@BvU you are confusing rounding epsilon with interval epsilon. @arhzz given that 2 is twice the size of 1 it should be obvious that...
May 17, 2024
BvU
replied to the thread
X and Y coordinates of an oscillating object on a spring.
.
So: no! Spring not stretched in the ##y## direction at ##t=0## doesn't mean never stretched. ##\dot y \ne 0## at t=0 means it does gets...
May 16, 2024
BvU
replied to the thread
X and Y coordinates of an oscillating object on a spring.
.
In first instance this is math. You have two seond order differential equations, so four initial conditions. For example ##x, \dot x, y...
May 16, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
I have shown that it is not the right answer (for my compiler). But probably the intended answer for a) is 2**(-23) Up to you :smile: !
May 15, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
So far I have done some trials starting with real*4 Y = 2.0 which is stored as 40000000 (in hexadecimal). Adding 2**(-23) (decimal...
May 15, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
Oops, messed up. Back later.
May 15, 2024
BvU
replied to the thread
A
Circuit ODE with multiple short voltage impulses
.
:welcome: The response of the system is simply a summation of the responses to the pulses from the past: ##V_0## at ##\tau_0##, so...
May 15, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
I thought. But it's more complicated. Trial and error, at least for me now. I figured the ##\varepsilon## for your part a) would be...
May 15, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
The key is in "real*4 2.0 is hexadecimal 40000000"
May 15, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
It means you have to reconsider your answer for a). real*4 2.0 is hexadecimal 40000000 2-23 = 1.1920929E-07 is hexadecimal 34000000 and...
May 15, 2024
BvU
replied to the thread
Comp Sci
IEEE-754 Precision Format
.
And please use a decimal point, not a decimal comma ... :rolleyes: What do you think of this: [edit] And I did ##\qquad##Y = 2 + ε...
May 14, 2024
BvU
replied to the thread
Universal gravitation’s problem -- Balancing gravitational forces from 2 masses
.
With a small sketch things become easier: In number 1 you have $$ F={G\,m_1m_2\over L^2} $$so in number 2 you want $$ {G\,m_1m_3\over...
May 14, 2024
Forums
Back
Top