gibson:teaching:spring-2018:math445:lecture:arithmetic
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gibson:teaching:spring-2018:math445:lecture:arithmetic [2018/01/23 13:46] gibson [Special numbers] |
gibson:teaching:spring-2018:math445:lecture:arithmetic [2018/01/24 18:05] (current) gibson [basic math functions] |
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| ====Variables==== | ====Variables==== | ||
| + | <code matlab> | ||
| >> x = 4 % assign value of 4 to variable x | >> x = 4 % assign value of 4 to variable x | ||
| x = | x = | ||
| Line 127: | Line 128: | ||
| ans = | ans = | ||
| 12 | 12 | ||
| + | </code> | ||
| ====Evaluating expressions==== | ====Evaluating expressions==== | ||
| + | |||
| + | If you want to evalue the same expression repeatedly with different variables, reset the value of the variables and use the arrow keys to "scroll up" to the expression. Then hit "enter" | ||
| + | |||
| + | <code matlab> | ||
| >> x = 3; | >> x = 3; | ||
| >> y = x^2 - 2*x + 5 | >> y = x^2 - 2*x + 5 | ||
| Line 138: | Line 143: | ||
| y = | y = | ||
| 4 | 4 | ||
| + | </code> | ||
| ==== basic math functions ==== | ==== basic math functions ==== | ||
| - | sin, cos, tan, sec, csc, cot, asin, acos, atan, | + | |
| - | exp, log, log10, abs, sqrt, factorial, mod | + | <code matlab> |
| + | sin, cos, tan, sec, csc, cot, asin, acos, atan % the classic trig funcs, in radians | ||
| + | sind, cosd, tand, secd, cscd, cotd, asind, acosd, atand % the classic trig funcs, in degrees | ||
| + | exp, log, log10, abs, sqrt, factorial, mod % other awesome functions | ||
| + | </code> | ||
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gibson/teaching/spring-2018/math445/lecture/arithmetic.1516744018.txt.gz · Last modified: 2018/01/23 13:46 by gibson
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