Gradient descent: Difference between revisions

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@@ Line 1,104: / Line 1,104: @@
 =={{header|Wren}}==
 {{trans|Go}}
-{{libheader|Wren-math}}
 {{libheader|Wren-fmt}}
-<lang ecmascript>import "/math" for Math
+<lang ecmascript>import "/fmt" for Fmt
-import "/fmt" for Fmt
 // Function for which minimum is to be found.
 var g = Fn.new { |x|
     return (x[0]-1)*(x[0]-1)*
-        Math.exp(-x[1]*x[1]) + x[1]*(x[1]+2)*
+        (-x[1]*x[1]).exp + x[1]*(x[1]+2)*
-        Math.exp(-2*x[0]*x[0])
+        (-2*x[0]*x[0]).exp
 }
@@ Line 1,120: / Line 1,118: @@
     var x = p[0]
     var y = p[1]
-    return [2*(x-1)*Math.exp(-y*y) - 4*x*Math.exp(-2*x*x)*y*(y+2),
+    return [2*(x-1)*(-y*y).exp - 4*x*(-2*x*x).exp*y*(y+2),
-            -2*(x-1)*(x-1)*y*Math.exp(-y*y) + Math.exp(-2*x*x)*(y+2) + Math.exp(-2*x*x)*y]
+            -2*(x-1)*(x-1)*y*(-y*y).exp + (-2*x*x).exp*(y+2) + (-2*x*x).exp*y]
 }