public function test_is_false_numsigfigs()
{
// This example has caused problems in Maxima in the past.
$at = new stack_answertest_general_cas('0.1660', '0.1667', 'ATNumSigFigs', true, '4', null, true, true);
$this->assertFalse($at->do_test());
$this->assertEquals(0, $at->get_at_mark());
}
public function test_stack_maxima_int_feedback_2()
{
$at = new stack_answertest_general_cas('((5*%e^7*x-%e^7)*%e^(5*x))', '((5*%e^7*x-%e^7)*%e^(5*x))/25+c', 'ATInt', true, '[x,x*%e^(5*x+7)]', null, true, true);
$this->assertFalse($at->do_test());
$this->assertEquals(0, $at->get_at_mark());
$fbt = 'stack_trans(\'ATInt_generic\' , !quot!\\[x\\cdot e^{5\\cdot x+7}\\]!quot! , !quot!\\(x\\)!quot! , ' . '!quot!\\[5\\cdot e^{5\\cdot x+7}+5\\cdot \\left(5\\cdot e^7\\cdot x-e^7\\right) \\cdot e^{5\\cdot x}\\]!quot! );';
$this->assertEquals($fbt, $at->get_at_feedback());
$fbt = 'The derivative of your answer should be equal to the expression that you were asked to integrate, that was: ' . '\\[x\\cdot e^{5\\cdot x+7}\\] In fact, the derivative of your answer, with respect to \\(x\\) is: ' . '\\[5\\cdot e^{5\\cdot x+7}+5\\cdot \\left(5\\cdot e^7\\cdot x-e^7\\right) \\cdot e^{5\\cdot x}\\] ' . 'so you must have done something wrong!';
$this->assertEquals($fbt, stack_maxima_translate($at->get_at_feedback()));
}
