Nikolais started a thread recently with the following formula:
Y = a + a3*sin(a4 + c1*cos(b1*X+e1) + d1*sin(b2*X+e2) + c2*cos(b3*X+e3) + d2*sin(b4*X+e4)+c3*cos(b5*X+e5) + d3*sin(b6*X+e6)+c4*cos(b7*X+e7) + d4*sin(b8*X+e8)+c5*cos(b9*X+e9) + d5*sin(b10*X+e10)+c6*cos(b11*X)+e11 + d6*sin(b12*X+e12)+c7*cos(b13*X+e13) + d7*sin(b14*X+e14))+a5*cos(a6 + c9*cos(b17*X+e17) + d9*sin(b18*X+e18) + c10*cos(b19*X+e19) + d10*sin(b20*X+e20)+c11*cos(b21*X+e21) + d11*sin(b22*X+e22)+c12*cos(b23*X+e23) + d12*sin(b24*X+e24)+c13*cos(b25*X+e25) + d13*sin(b26*X+e26)+c14*cos(b27*X+e27) + d14*sin(b28*X+e28))
You can link to the thread here . I have posted questions on this thread with no replies so I thought that I should create another one to prompt people to reply if they would be so kind.
My questions are:
What is the mathmatical equation called?
Were did the formula come from?
How did you work out the parameters(a - e)? I presume from past results. How many past results do you need before this equation is valid. Wont the parameters be different for each number?
Dont understand what the Coefficient of Multiple Determination is?
If you can point me to a mathematical book? I would be interested to look into this formula and do some testing. I would be happy to post any results what I find?
Please can anybody help?
Y = a + a3*sin(a4 + c1*cos(b1*X+e1) + d1*sin(b2*X+e2) + c2*cos(b3*X+e3) + d2*sin(b4*X+e4)+c3*cos(b5*X+e5) + d3*sin(b6*X+e6)+c4*cos(b7*X+e7) + d4*sin(b8*X+e8)+c5*cos(b9*X+e9) + d5*sin(b10*X+e10)+c6*cos(b11*X)+e11 + d6*sin(b12*X+e12)+c7*cos(b13*X+e13) + d7*sin(b14*X+e14))+a5*cos(a6 + c9*cos(b17*X+e17) + d9*sin(b18*X+e18) + c10*cos(b19*X+e19) + d10*sin(b20*X+e20)+c11*cos(b21*X+e21) + d11*sin(b22*X+e22)+c12*cos(b23*X+e23) + d12*sin(b24*X+e24)+c13*cos(b25*X+e25) + d13*sin(b26*X+e26)+c14*cos(b27*X+e27) + d14*sin(b28*X+e28))
You can link to the thread here . I have posted questions on this thread with no replies so I thought that I should create another one to prompt people to reply if they would be so kind.
My questions are:
What is the mathmatical equation called?
Were did the formula come from?
How did you work out the parameters(a - e)? I presume from past results. How many past results do you need before this equation is valid. Wont the parameters be different for each number?
Dont understand what the Coefficient of Multiple Determination is?
If you can point me to a mathematical book? I would be interested to look into this formula and do some testing. I would be happy to post any results what I find?
Please can anybody help?
