# [LON-CAPA-cvs] cvs: loncom /homework/templates SimpleFormula.problem

www lon-capa-cvs@mail.lon-capa.org
Mon, 31 Jan 2005 11:17:04 -0000

```www		Mon Jan 31 06:17:04 2005 EDT

Modified files:
/loncom/homework/templates	SimpleFormula.problem
Log:

Index: loncom/homework/templates/SimpleFormula.problem
diff -u loncom/homework/templates/SimpleFormula.problem:1.4 loncom/homework/templates/SimpleFormula.problem:1.5
--- loncom/homework/templates/SimpleFormula.problem:1.4	Thu Aug 19 16:29:22 2004
+++ loncom/homework/templates/SimpleFormula.problem	Mon Jan 31 06:17:04 2005
@@ -1,20 +1,15 @@
-<problem>
-<script type="loncapa/perl">\$z=&random(1,10,1);
-\$constant=&random(1,10,1);
-# y=x+z-constant, solving for x, x=y-z+constant, prettyconstant is for simplifying
-\$prettyconstant=\$constant-\$z;
-\$x="y+\$prettyconstant";
-# code below substitutes '+-' and '-+' for '-'.  This is used in display of answer
-\$x=~s/\+-/-/g;
-\$x=~s/-\+/-/g;</script>
-
-<startouttext />If z=\$z and y=x+z-\$constant, what does x equal?
-<endouttext />
-
-    <responseparam description="Numerical Tolerance" type="tolerance" default="0.00001" name="tol" />
-    <textline size="25" />
-</formularesponse>
-
-</problem>
-
+<problem>
+<script type="loncapa/perl">\$k=&random(3,6,1);
+\$formula="a*x^\$k";
+\$m=\$k-1;
+\$derivative="\$k*a*x^\$m";</script>
+
+<startouttext />What is the derivative of <tt>\$formula</tt> with respect to x?<endouttext />
+