Dec 1, 2014 · I have some Matlab code of the following form: syms theta x theta = acos(x) This returns a single solution for theta. However, I want to return the complete solution (between some limits). For

Jan 20, 2017 · MATLAB correctly recognizes that no real solution exists, but complex solutions do - so it returns complex angles as a result. For h=1 and h=2 , the cos_theta 's behave nicely and are smaller than -1 , so the results are real.

In response to using inverse cosine to find return angles via math.acos, it's all fine and dandy so long as the angle is <=90* once you go past that, python will have no way of differentiating which angle you wanted. Observe. >>> math.cos(5) 0.28366218546322625

Oct 7, 2016 · The most common use of CORDIC is probably for implementing sin / cos, that is how I first learned about it (in 1987). But quite a few other functions can be computed with CORDIC as well, such as atan2.

Mar 16, 2024 · I'm attempting to replicate a design i have in mind using matlab. I have the math worked out I need help with translating it within matlab 3d space. I get the different axis etc, it's just aligning the points together. I'm using: lx=x[1] ly=y[1]+coax lz=z[1]

Apr 2, 2016 · I don't think this is necessarily mathematically possible in most cases. Even with just 1 equation like z1 = cos(x1), you can't find a function x1 = f(z1) because in the original equation many values of x1 give the same value of z1. (i.e. cos(0) = 1 and cos(2*pi) = 1) –

Nov 26, 2013 · If you want to provide angle in degrees then use cosd and sind and if angle is in radians then use cos and sin. cos(0) and cosd(0) are producing 1 on my computer. However cos(pi/2) is producing 6.1232e-17 and cosd(90) is producing 0. you can check matlab specification which number is close to 0.

Oct 31, 2016 · I based my answer on your previous post: Matlab image rotation. I used 'peppers.png' instead of 'forest.png' (I can't find 'forest.png', next time, please add the image to your post). The example code do the following: Rotate input image (You may treat it as "reverse transformation"). Rotate result image back (using inverse transformation matrix).

Aug 21, 2013 · Collapsing the for loop was also an essential step for proper matlab implementation, that I don't use in training purpose to ease my understanding and bound checking. An additionnal very interesting point @Try hard mentionned in its first sentence, and that I did not realised in the first place, is the fact, that zero padding is just the ...

Oct 17, 2012 · However, if x>0 is always true, then you just take use the inverse tangent function, etc. You could use this representation, to compute the inverse function: In your example, y = 2cos(r) and x = 1.5sin(r). Therefore, if you divide the above expression with y, you get it in the form of x/y which in your case is 4/3 cot(r).