Help me solve a long equation in Matlab

[fatma1000]

i have very big equation i want to solve it in matlab or any method please help

B2=-3*w1^2*b1/c*w/((w1^2-w^2)^2+d1^2*w^2)-w1^2*b1/c*(w1^2-w^2)/((w1^2-w^2)^2+d1^2*w^2)^2*(-4*(w1^2-w^2)*w+2*d1^2*w)+2*w1^2*b1/c*w^2/((w1^2-w^2)^2+d1^2*w^2)^2*(-4*(w1^2-w^2)*w+2*d1^2*w)+w1^2*b1/c*w*(w1^2-w^2)/((w1^2-w^2)^2+d1^2*w^2)^3*(-4*(w1^2-w^2)*w+2*d1^2*w)^2-1/2*w1^2*b1/c*w*(w1^2-w^2)/((w1^2-w^2)^2+d1^2*w^2)^2*(12*w^2-4*w1^2+2*d1^2)-3*w2^2*b2/c*w/((w2^2-w^2)^2+d2^2*w^2)-w2^2*b2/c*(w2^2-w^2)/((w2^2-w^2)^2+d2^2*w^2)^2*(-4*(w2^2-w^2)*w+2*d2^2*w)+2*w2^2*b2/c*w^2/((w2^2-w^2)^2+d2^2*w^2)^2*(-4*(w2^2-w^2)*w+2*d2^2*w)+w2^2*b2/c*w*(w2^2-w^2)/((w2^2-w^2)^2+d2^2*w^2)^3*(-4*(w2^2-w^2)*w+2*d2^2*w)^2-1/2*w2^2*b2/c*w*(w2^2-w^2)/((w2^2-w^2)^2+d2^2*w^2)^2*(12*w^2-4*w2^2+2*d2^2)
i need from it w1,w2,b1&b2
1 have all parameters and have four pairs of B2 and w

regards

 

[smxx]

solve equation

hi
try to make a matrix for b,w and d variables and break your equation for fundamental matrix equation.

 

[fatma1000]

Re: solve equation

i need to solve it numerecal
i have a curve represent this equation so may be like curve fitting i need to help me how can i solve it numerecal

 

[fatma1000]

Re: solve equation

i need any help to understand curve fitting and to program it in c++
so i need like code to make curve fitting in c++

 

[smxx]

solve equation

hi fatama
you can use matlab curve fitting.

 

[fatma1000]

Re: solve equation

can you help me in useing matlab curve fitting
if you have an simple example
regards

 

[fatma1000]

Re: solve equation

i have an equation whin i differntiat it i got above equation and i have the curve of this above equation and i need six parameters from all thes informations
i have
1)above equation
2)curve of this equation between B2 and w
i need

w1, b1,d1,w2,b2&d2

can you help me?
regards