This is my impelmentation of a Variational Quantum Linear Solver from the qiskit tutorial here: https://qiskit.org/textbook/ch-paper-implementations/vqls.html
The author suggested that SPSA would be better to sample a noisy circuit. I compared SPSA to SciPy.minimize() and found that SPSA lags slighly behind SciPy.minimize(). I believe this is a statistical outlier as previous tests of SPSA yeiled better results.
