export function matrix3x3x1Multiplication(mat1, mat2) {
  let newMatrix = []
  mat1.forEach(mat1Row => {
    let value = 0
    mat2.forEach((mat2Row, mat2ind) => {
      mat2Row.forEach(rowValue => {
        value += rowValue * mat1Row[mat2ind]
      })
    })
    newMatrix.push(Number(value.toFixed(4)))
  })
  return newMatrix
}