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Calling of Function polyval:
The curve does not appear very smooth on this plot, but that is as there are only five points in the x vector.
To estimate the temperature at various times, polyval can be used for discrete x points; it does not have to be used with the whole x vector. For illustration, to interpolate between the given data points and estmate what the temperature was at 2:30 p.m., 2.5 would be used.
>> polyval(coefs,2.5)
ans =
67.1357
The polyval can also be used to extrapolate beyond the given data points, for illustration, to estimate the temperature at 1 p.m.:
>> polyval(coefs,1)
54.6000
How can I use the weighted moving average formula in matlab to smooth a column data of 404 values?
Preallocating a Vector: There are necessarily two programming techniques that can be used to simulate the cumsum function. One technique is to begin with an empty vector and c
For Loops which do not use an iterator Variable in the action: In all the illustrations that we seen so far, the value of the loop variable has been used in same way in the ac
Illustration of Gauss elimination: For illustration, for a 2 × 2 system, an augmented matrix be: Then, the EROs is applied to obtain the augmented matrix into an upper
about sampling theorem
Displaying expressions: The good-looking function will show such expressions by using exponents; for illustration, >> b = sym('x^2') b = x^2 >> pretty(b)
Forward substitution: The Forward substitution (done methodically by first getting a 0 in the a 21 place, and then a 31 , and lastly a 32 ): For the Gauss technique,
Replacement : Replace a row by adding it to (or subtract from it) a multiple of the other row. For a given row ri, this is written as ri - srj → ri Note that when r
Logical scalar values: The MATLAB also has or and and operators which work element wise for the matrices: These operators will compare any of the two vectors or matric
Example of Plotting from a Function: For illustration, the function can be called as shown below: >> y = [1:2:9].^3 y = 1 27 125 343 729
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