: Use MMULT for matrix multiplication of weights and inputs.
: A new add-in from OpenAI allows you to run complex models and "agent" scenarios directly within cells. build neural network with ms excel new
| Problem | Likely fix | |----------------------------------|------------------------------------------| | #VALUE! in MMULT | Check matrix dimensions. W1: 2x2, Input: 4x2. | | Loss not decreasing | Increase iterations in Solver; re-initialize weights. | | Predictions stuck near 0.5 | Increase weight range (try -1 to +1 initially). | | Solver not found | Enable Solver Add-in (File → Options → Add-ins). | : Use MMULT for matrix multiplication of weights and inputs