From 5e49cdc501a3154099c873db5be8cb146d4939b8 Mon Sep 17 00:00:00 2001
From: Martin Donk <jiggzson@gmail.com>
Date: Sat, 21 Mar 2020 19:48:00 -0500
Subject: [PATCH] Fix diff for matrices

---
 Calculus.js | 9 ++++++++-
 all.js      | 2 +-
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/Calculus.js b/Calculus.js
index 182bafca..af24dee2 100644
--- a/Calculus.js
+++ b/Calculus.js
@@ -368,10 +368,17 @@ if((typeof module) !== 'undefined' && typeof nerdamer === 'undefined') {
             if(core.Utils.isVector(symbol)) {
                 var vector = new core.Vector([]);
                 symbol.each(function(x) {
-                    vector.elements.push(__.diff(x, wrt));
+                    vector.elements.push(__.diff(x, wrt, nth));
                 });
                 return vector;
             }
+            else if(core.Utils.isMatrix(symbol)) {
+                var matrix = new core.Matrix();
+                symbol.each(function(x, j, i) {
+                    matrix.set(i, j, __.diff(x, wrt, nth));
+                });
+                return matrix;
+            }
 
             var d = isSymbol(wrt) ? wrt.text() : wrt; 
             //the nth derivative
diff --git a/all.js b/all.js
index a6f74196..5c996164 100644
--- a/all.js
+++ b/all.js
@@ -13,4 +13,4 @@ require('./Solve.js');
 require('./Extra.js');
 
 //export nerdamer
-module.exports = nerdamer;
+module.exports = nerdamer;
\ No newline at end of file