![]() ![]() ![]() I know sec=1/cos I was trying to see if simple algebra would get the original signal back but it looks like my understanding of Trig is lacking, as you can see in the third plot below it doesn't go back to the original cos signal which is what I'm trying to do.Īnd please don't post just use cos (x) This is a simple example showing what I'm trying to do, the real code is about 500 lines with multiple functions that it calls. Together they make up the set of six trigonometric functions. Though sine and cosine are the trigonometric functions most often used, there are four others. We have already defined the sine and cosine functions of an angle. Anyway, I feel like it should be faster to numerically solve it with double precision at interpolation points and interpolate afterwards to achieve a continuous function. Predictive Maintenance, Part 5: Digital Twin. Trigonometric functions allow us to specify the shapes and proportions of objects independent of exact dimensions. In my project, the polynomic and trigonometric functions itself depend on other piecewise defined functions, which I guess slows the symbolic solution down even more. 3) would like to convert the secant signal back to the Jacobi method ninput( Enter number of equations, n: ) A zeros(n,n+1) x1 zeros(n) x2 zeros(n).2) convert the signal to a secant signal.You either need to change your definition of x to be t, for example: t 0:pi/20:4pi or you need to make your y a function of x, rather than t, for example: y (25sin (3)x) I am curious if your original equation/function that you are trying to plot is y (t)25 sin (3 t). (7) You can control the number of digits that are displayed in an answer. 1 Your code isn't working because t is undefined. Sine, cosine, and related functions, with results in radians or degrees. Remember to provide values with units of radians when using trig functions in MATLAB. Simplify Symbolic Expressions Using Live Editor Task. Simplifying symbolic expressions, including assumptions and additional options. Extract Numerators and Denominators of Rational Expressions. Heres an example code that shows how to calculate the. Several functions are available to manipulate expressions. I'm trying to convert a signal back and forth using trigonometric functions. MATLAB: Workshop 1 - Numbers and Arithmetic page 6 Try this line instead » sinrad sin(piangledeg/180) sinrad 0.5000 Much better. In MATLAB, you can calculate the absolute value of the sine function using the abs function.
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