IDL Reference Guide: Procedures and Functions |
ALOG
ALOG is a company that has taught a lot of in office work. Forklift Operator/Order Puller in Lexington, NC. On December 9, 2019. The hardest part bout this job is the weather to me cause the colder it is outside 10 times colder in the warehouse but other than that alog is. The ALOG function returns the natural logarithm of X. For input of a complex number, Z = X + iY, the complex number can be rewritten as Z = R exp(i q), where R = abs(Z) and q = atan(y,x). The complex natural log is then given by, alog(Z) = alog(R) + i q In the above formula, the use of the two-argument arctangent separates the solutions at Y = 0 and takes into account the branch. A high-level overview of Analogic Corporation (ALOG) stock. Stay up to date on the latest stock price, chart, news, analysis, fundamentals, trading and investment tools.
The ALOG function returns the natural logarithm of X.
ALog Georgia Ltd. Is one of the leading company in supply chain in Georgia staffed with a group of young professionals and represented by a wide network of partners and agents, which can offer high quality transportation and forwarding services worldwide. As a freight forwarder of large volume of commercial goods, we are committed to provide our business clients with. ALOG & Company Inc. Adress: Unit 301 Alabang Business Tower 1216 Acacia Ave. Madrigal Business Park, Ayala Alabang. Country:Muntinlupa City - Philippines. E-mail: customerservice@aloginc.com. FEEL FREE TO CONTACT US Telephone: +632 (8478-9675) +632 (8478-8466) +632 (8478-9081) Cellular Phone +63 917 881-2564.
For input of a complex number, Z = X + iY, the complex number can be rewritten as Z = R exp(iq), where R = abs(Z) and q = atan(y,x). The complex natural log is then given by,
alog(Z) = alog(R) + iq
In the above formula, the use of the two-argument arctangent separates the solutions at Y = 0 and takes into account the branch-cut discontinuity along the real axis from -¥ to 0, and ensures that exp(alog(Z)) is equal to Z. For reference, see formulas 4.4.1-3 in Abramowitz, M. and Stegun, I.A., 1964: Handbook of Mathematical Functions (Washington: National Bureau of Standards).
Syntax
Result = ALOG(X)
Alogliptin Benzoate
Return Value
Returns the natural logarithm of X.
Arguments
X
The value for which the natural log is desired. For real input, X should be greater than or equal to zero. If X is double-precision floating or complex, the result is of the same type. All other types are converted to single-precision floating-point and yield floating-point results. If X is an array, the result has the same structure, with each element containing the natural log of the corresponding element of X.
Keywords
Thread Pool Keywords
This routine is written to make use of IDL's thread pool, which can increase execution speed on systems with multiple CPUs. The values stored in the !CPU system variable control whether IDL uses the thread pool for a given computation. In addition, you can use the thread pool keywords TPOOL_MAX_ELTS, TPOOL_MIN_ELTS, and TPOOL_NOTHREAD to override the defaults established by !CPU for a single invocation of this routine. See Thread Pool Keywords for details.
Examples
Find the natural logarithm of 2 and print the result by entering:
Find the complex natural log of sqrt(2) + i sqrt(2) and print the result by entering:
Note The real part of the result is just ALOG(2) and the imaginary part gives the angle (in radians) of the complex number relative to the real axis. |
See the ATAN function for an example of visualizing the complex natural log.
Version History
Alogia Definition
See Also
Alog Urban Dictionary
ALOG10, ATAN
IDL Online Help (June 16, 2005)