Algorithms are everywhere. They play the stockmarket, decide whether you can have a mortgage and may one day drive your car for you. They search the internet when commanded, stick carefully chosen advertisements into the sites you visit and decide what prices to show you in online shops. (-) But what exactly are algorithms, and what makes them so powerful?
An algorithm is, essentially, a se brainless way of doing clever things. It is a set of precise steps that need no great mental effort to follow but which, if obeyed exactly and mechanically, will lead to some desirable outcome. Long division and column addition are examples that everyone is familiar with - if you follow the procedure, you are guaranteed to get the right answer. So is the strategy, rediscovered thousands of times every year by schoolchildren bored with learning mathematical algorithms, for playing a perfect game of noughts and crosses. The brainlessness is key, each step should be as simple and as free from ambiguity as possible. Cooking recipes and driving directions are algorithms of a sort. But instructions like "stew the meat until tender" or "it's a few miles down the road" are too vague to follow without at least some interpretation. (-)
Questão 1: H5 No texto, um exemplo associado ao fato de algoritmos estarem por toda parte é
(a) o cartão de crédito (b) o livre mercado (c) a dieta (d) o jogo de xadrez (e) o comércio eletrônico
Questão 2: H5 segundo o texto, a execução de um algoritmo consiste em um processo que
(a) prevê a memorização de tabelas e fórmulas (b) envolve mecanismos de seleção e detecção de erros (c) se apoia em um número infinito de etapas (d) é incompatível com a análise subjetivas e imprecisas (e) alterna níveis altos e baixos de esforço intelectual
Lista de comentários
Verified answer
Resposta:
ing by Alan Turing during the second world war, of finding the keys to unscramble coded messages.
1. What is an algorithm?
a) A complex set of steps that require mental effort to follow;
b) A precise set of steps that lead to desired outcomes;
c) A way of doing things that is not very effective;
d) A way of doing things that involves guesswork.
2. What is the example of an algorithm given in the text?
a) Long division and column addition;
b) Driving a car;
c) Searching the internet;
d) Sticking advertisements into websites.
Respostas:
1. A resposta correta é a letra b), "um conjunto preciso de passos que levam a resultados desejados".
2. A resposta correta é a letra a), "divisão longa e adição de colunas".
1. (e) o comércio eletrônico
2. (a) prevê a memorização de tabelas e fórmulas