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4_pdfsam_3 - Problem solve for s s 2 5 s 6 = 0 s = − b ±...

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3.2.1 Diary Command The diary commands allows you to record all of the input and displayed output from a Matlab interactive workspace session. The commands include: diary file : Saves all text from the Matlab session, except for the prompts ( >> ), as text in file , written to the present working directory. If file is not specified, the information is written to the file named diary . diary off : Suspends diary operation. diary on : Turns diary operation back on. diary : Toggles diary state Example 3.1 Use of diary command Consider again the example involving roots of the quadratic equation.
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Unformatted text preview: Problem: solve for s: s 2 + 5 s + 6 = 0 s = − b ± √ b 2 − 4 ac 2 a Matlab session: >> diary roots >> a=1; >> b=5; >> c=6; >> x = -b/(2*a); >> y = sqrt(b^2-4*a*c)/(2*a); >> s1 = x+y s1 =-2 >> s2 = x-y s2 =-3 The Fle roots is written in your current working directory. It can be displayed by the Matlab command type roots . It can also be displayed in a Unix terminal window by the command more roots or printed with the command lp roots . a=1; b=5; 40...
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