diff --git a/linalg-practice.py b/linalg-practice.py
index 9066aca..49f0a94 100644
--- a/linalg-practice.py
+++ b/linalg-practice.py
@@ -22,6 +22,12 @@ def multcheck(a, b, rowcol, intmax) :
     # return bool based on if input equals the two matrices multiplied together
     return (sp.Matrix(inmat(rowcol)) == a*b)
 
+# detcheck function to check if the determinant of the matrix is correct
+def detcheck(a, b, rowcol, intmax):
+    det = sp.det(a)
+    # return bool based on if input equals determinant
+    return (det == sp.nsimplify(input("What is the determinant of this matrix?: ")))
+
 # practice function
 def practice(t) :
     count = 0
@@ -32,6 +38,8 @@ def practice(t) :
     # choose the function of the program that you want
     if t == "mult" :
         f = multcheck
+    elif t == "det" :
+        f = detcheck
     else :
         exit()