A Project is a set of activities in order to produce a unique product or service in a certain period of time. As we…

# Author: eazambuja

## Engineering Project Management: The project lifecycle

The project lifecycle is a sequence of phases in a project with certain name and number, assigned by the management of the project or…

## Complex numbers

Definition of complex number A Complex number is a pair of real numbers (x;y). Its algebraic form is z=x+i*y, where i is an imaginary…

## Complex numbers 2

Let's suggest a function y=f(x) that is defined on the interval (a,b). Choose a point x on the interval (a,b), and another point x+∆x…

## Differentiability, differential of a function and integral

If function y=f(x) has a derivative in the point x: lim∆x→0 ∆y∆x=f' (x) Let's introduce the function: α(x)=∆y∆x-f' (x)=f(x+∆x)-f(x)∆x-f' (x) Function α(x) exists with the…

## Quiz

Solve this quiz and write your answers in comments. Exercise 1. Calculate: a. 5-1i3+i;b. (7+2i)-(3-2i)+(11+i)-(17-3i);c. (2+i)*(5-2i)+(6+13i)*(7-i);d. -13+6i2-i+ (8-i5+2i)2 Exercise 2. Calculate: Re(12-i6+3i), Im(-2i5+i) Exercise 3. Find all…

## Sponsorship of FIRST LEGO League INTO ORBIT UK and Ireland STEM challenge

RS Components has announced its headline sponsorship of the Institution of Engineering and Technology’s (IET) FIRST LEGO League INTO ORBITSM 2018/19 season in the…

## Types of signals

Types of signals. Even and odd signals. The continuous-time and discrete-time signals are called even if they are identical to their counterparts on the…

## Discrete LTI systems

It is useful to consider discrete-time signals as a sequence of impulses. For example, a discrete-time signal is on show in Figure 1. Figure…

## Combinational gates

Combinational gates are the way to represent logic functions. A combinational gate is a function of the inputs, creating a specific output. The truth…