From 190c52726928f2467a4b38ec874bb36e3c667ecd Mon Sep 17 00:00:00 2001
From: Pavel Tisnovsky <ptisnovs@redhat.com>
Date: Mon, 23 Dec 2019 10:11:02 +0100
Subject: [PATCH] Matrix library, example #19

---
 lesson7/gonum/mat19.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
 create mode 100644 lesson7/gonum/mat19.go

diff --git a/lesson7/gonum/mat19.go b/lesson7/gonum/mat19.go
new file mode 100644
index 0000000..58831c7
--- /dev/null
+++ b/lesson7/gonum/mat19.go
@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"gonum.org/v1/gonum/mat"
+)
+
+func main() {
+	m := mat.NewDense(3, 3, []float64{0, -1, 0, 1, 0, 0, 0, 0, 1})
+	v3 := mat.NewVecDense(3, []float64{2, 3, 4})
+	v := mat.NewVecDense(3, nil)
+	v.MulVec(m, v3)
+
+	fmt.Printf("v:\n%v\n\n", mat.Formatted(v))
+}