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CompSquare: Answer test results

This page exposes the results of running answer tests on STACK test cases. This page is automatically generated from the STACK unit tests and is designed to show question authors what answer tests actually do. This includes cases where answer tests currentl fail, which gives a negative expected mark. Comments and further test cases are very welcome.

CompSquare

Test
?
Student response
Teacher answer
Opt
Mark
Answer note
CompSquare 
1/0
 
0
 -1 STACKERROR_OPTION.
TEST_FAILED
The answer test failed to execute correctly: please alert your teacher. Missing option when executing the test.
CompSquare 
1/0
 
0
 
x
 -1 ATCompSquare_STACKERROR_SAns.
TEST_FAILED
The answer test failed to execute correctly: please alert your teacher. Division by zero.
CompSquare 
0
 
1/0
 
x
 -1 ATCompSquare_STACKERROR_TAns.
TEST_FAILED
The answer test failed to execute correctly: please alert your teacher. Division by zero.
CompSquare 
0
 
0
 
1/0
 -1 ATCompSquare_STACKERROR_Opt.
TEST_FAILED
The answer test failed to execute correctly: please alert your teacher. Division by zero.
Category errors.
CompSquare 
1
 
(x-1)^2+1
 
x
 0 ATCompSquare_SA_not_depend_var.
Your answer should depend on the variable \(x\) but it does not!
CompSquare 
(t-1)^2+1
 
(x-1)^2+1
 
x
 0 ATCompSquare_SA_not_depend_var.
Your answer should depend on the variable \(x\) but it does not!
CompSquare 
(x-1)^2+1=0
 
(x-1)^2+1
 
x
 0 ATCompSquare_STACKERROR_LIST.
Your answer should be an expression, not an equation, inequality, list, set or matrix.
CompSquare 
sin(x-1)+a-1
 
(x-1)^2+1
 
x
 0 ATCompSquare_false_not_AlgEquiv.
Trivial cases
CompSquare 
1
 
1
 
x
 1 ATCompSquare_true_trivial.
CompSquare 
x-a
 
x-a
 
x
 1 ATCompSquare_true_trivial.
CompSquare 
x^2
 
x^2
 
x
 1 ATCompSquare_true.
CompSquare 
x^2-1
 
(x-1)*(x+1)
 
x
 1 ATCompSquare_true.
CompSquare 
(x-1)^2*k
 
(x-1)^2*k
 
x
 1 ATCompSquare_true.
CompSquare 
(x-1)^2/k
 
(x-1)^2/k
 
x
 1 ATCompSquare_true.
Normal cases
CompSquare 
(x-1)^2+1
 
(x-1)^2+1
 
x
 1 ATCompSquare_true.
CompSquare 
(1-x)^2+1
 
(x-1)^2+1
 
x
 1 ATCompSquare_true.
CompSquare 
(X-1)^2+1
 
(x-1)^2+1
 
x
 0 ATCompSquare_SA_not_depend_var.
Your answer should depend on the variable \(x\) but it does not!
CompSquare 
9*(x-1)^2+1
 
(3*x-3)^2+1
 
x
 1 ATCompSquare_true.
CompSquare 
-(x-1)^2
 
-(x-1)^2
 
x
 1 ATCompSquare_true.
CompSquare 
-(1-x)^2
 
-(x-1)^2
 
x
 1 ATCompSquare_true.
CompSquare 
-(x-1)^2+3
 
-(x-1)^2+3
 
x
 1 ATCompSquare_true.
CompSquare 
-(1-x)^2+3
 
-(x-1)^2+3
 
x
 1 ATCompSquare_true.
CompSquare 
-4*(x-1)^2+3
 
-4*(x-1)^2+3
 
x
 1 ATCompSquare_true.
CompSquare 
-4*(x-1)^2+3
 
-(2*x-2)^2+3
 
x
 1 ATCompSquare_true.
CompSquare 
3-4*(x-1)^2
 
-(2*x-2)^2+3
 
x
 1 ATCompSquare_true.
CompSquare 
(x-1)^2+1
 
(x+1)^2+1
 
x
 0 ATCompSquare_true_not_AlgEquiv.
Your answer appears to be in the correct form, but is not equivalent to the correct answer.
CompSquare 
(x-a^2)^2+1+b
 
(x-a^2)^2+1+b
 
x
 1 ATCompSquare_true.
CompSquare 
x^2-2*x+2
 
(x-1)^2+1
 
x
 0 ATCompSquare_false_no_summands.
The completed square is of the form \( a(\cdots\cdots)^2 + b\) where \(a\) and \(b\) do not depend on your variable. More than one of your summands appears to depend on the variable in your answer.
CompSquare 
x+1
 
(x-1)^2+1
 
x
 0 ATCompSquare_false_not_AlgEquiv.
CompSquare 
a*(x-1)^2+1
 
a*(x-1)^2+1
 
x
 1 ATCompSquare_true.
CompSquare 
-a*(x-1)^2+1
 
1-a*(x-1)^2
 
x
 1 ATCompSquare_true.
Not simple variable
CompSquare 
(sin(x)-1)^2+1
 
(sin(x)-1)^2+1
 
sin(x)
 1 ATCompSquare_true.
CompSquare 
(x^2-1)^2+1
 
(x^2-1)^2+1
 
x^2
 1 ATCompSquare_true.
CompSquare 
(y-1)^2+1
 
(y-1)^2+1
 
y
 1 ATCompSquare_true.
CompSquare 
(y+1)^2+1
 
(y-1)^2+1
 
y
 0 ATCompSquare_true_not_AlgEquiv.
Your answer appears to be in the correct form, but is not equivalent to the correct answer.
CompSquare 
(x-1)^2+1
 
(sin(x)-1)^2+1
 
sin(x)
 0 ATCompSquare_SA_not_depend_var.
Your answer should depend on the variable \({\it facdum}\) but it does not!