# Computational Methods lecture 1

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• Created by: cbd19
• Created on: 10-02-20 14:28
What must you do at the start of a program?
To remove memory type clear, and to clear command window then type clc. Type close all to get rid of any figures
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To create variable a=4.5 what do we type?
a=4.5
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How would you get the square root of a variable in matlab?
sqrt(x)
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How would you get log to base e of x?
log(x)
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How would you get log to base 10 of x?
log10(x)
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How would you get e^x?
exp(x)
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How would you get sin, cos, and tan of x?
sin(x), cos(x), tan(x)
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What would we write to prompt the user to input a density?
density=input(’ Enter the fluid density in kg/m^3’)
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How would you get 'the answer is' displayed?
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How would you display an inputted variable such as density?
disp(density)
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What do the percent symbols denote?
% symbol denotes comments and %% symbol denotes starts and ends of sections
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What is 0.01 written like in matlab?
1e-2
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## Other cards in this set

### Card 2

#### Front

To create variable a=4.5 what do we type?

a=4.5

### Card 3

#### Front

How would you get the square root of a variable in matlab?

### Card 4

#### Front

How would you get log to base e of x?

### Card 5

#### Front

How would you get log to base 10 of x?