hello every body

how can i solve this equation with respect to z

a, b are constants

3a(1+z)^2=2(a(1+z)^3+b)^(1/2)

Hello every body

I wrote a program and i need to inverse a matrix but i get "error (in linear algebra:- matrix inverse)" singular matrix

can you help me to do that. the matrix is:

Matrix([[1.0000, 0.7056, 0.7965, 0.6928, 0.5941, 0.5169], [0.7056, 1.0000, 0.5653, 0.6449, 0.4601, 0.4376], [0.7965, 0.5653, 1.0000, 0.5521, 0.5526, 0.4153], [0.6928, 0.6449, 0.5521, 1.0000, 0.4271, 0.4242], [0.5941, 0.4601, 0.5526, 0.4271, 1.0000, 0.2999], [0.5169, 0.4376, 0.4153, 0.4242, 0.2999, 1.0000]])