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Full Discussion: Is it a hard exam to pass?
Top Forums UNIX for Dummies Questions & Answers Is it a hard exam to pass? Post 302535984 by brownwrap on Sunday 3rd of July 2011 03:51:21 PM
Old 07-03-2011
So, did you take the exams?

Quote:
Originally Posted by newlinuxuser1
Oh, it isn't too hard after all. I studied some electronics in college and it is much more complex, involving intensive math (how's about solving system of partial differential equations). Just don't repeat my initial mistake and don't try get it all at once. Go step by step, learn basics and it will clear a lot of ground ahead. It sounds much more intimidating than it really is. Also don't be discouraged by discouraged. There's plenty of guys who will tell you stuff "it requires 20 years of experience... blah, blah...", don't listen to it. Most of people who say that don't know that much, really. The guys who are really knowledgeable, can explain very complex ideas in very simple ways and offer really great advise. Of cause it requires hard work, but this hard work is enjoyable! Isn't it? I hardly can describe all long hours I spend with my linux/solaris as laborious. In short, while there's a lot it's all approachable... and passing the exams is not that difficult after all.

Did you take both Solaris exams and get certified?
 

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COMPLEX(7)						     Linux Programmer's Manual							COMPLEX(7)

NAME
complex - basics of complex mathematics SYNOPSIS
#include <complex.h> DESCRIPTION
Complex numbers are numbers of the form z = a+b*i, where a and b are real numbers and i = sqrt(-1), so that i*i = -1. There are other ways to represent that number. The pair (a,b) of real numbers may be viewed as a point in the plane, given by X- and Y- coordinates. This same point may also be described by giving the pair of real numbers (r,phi), where r is the distance to the origin O, and phi the angle between the X-axis and the line Oz. Now z = r*exp(i*phi) = r*(cos(phi)+i*sin(phi)). The basic operations are defined on z = a+b*i and w = c+d*i as: addition: z+w = (a+c) + (b+d)*i multiplication: z*w = (a*c - b*d) + (a*d + b*c)*i division: z/w = ((a*c + b*d)/(c*c + d*d)) + ((b*c - a*d)/(c*c + d*d))*i Nearly all math function have a complex counterpart but there are some complex-only functions. EXAMPLE
Your C-compiler can work with complex numbers if it supports the C99 standard. Link with -lm. The imaginary unit is represented by I. /* check that exp(i * pi) == -1 */ #include <math.h> /* for atan */ #include <stdio.h> #include <complex.h> int main(void) { double pi = 4 * atan(1.0); double complex z = cexp(I * pi); printf("%f + %f * i ", creal(z), cimag(z)); } SEE ALSO
cabs(3), carg(3), cexp(3), cimag(3), creal(3) COLOPHON
This page is part of release 3.25 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2009-07-25 COMPLEX(7)
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