Create_hyper_quiz_0_1 #

0

Display_MathML_0_1 #

0

For_regist_answerers_0_1 #

0

Heading #

Solutions to the polynomial equation x^2 + b*x + c = 0.

Introduction #

This quiz illustrates the use of formula answers as elements of an ordered or unordered sequence, in particular the so-called discriminant and the two roots of a polynomial equation of second degree. The expressions for the roots include the square root function, which you should write as sqrt().

Intro_repeat_0_1 #

0

Qstn_name_number_1 #

Qstn_phrase_1 #

Enter in sequence the discriminant D, the smallest and the largest of the two roots for the polynomial equation x^2 + b*x + c = 0, thus altogether 3 expressions:

Correct_answer_1 #

[ !qcmath b^2 - 4*c ] [ !qcmath (-b -sqrt(D))/2 ] [ !qcmath (-b +sqrt(D))/2 ]

Hints_1 #

2 The answer was incorrect and you will now be prompted for each expression in turn.

Reward_1 #

5

Qstn_name_number_2

Qstn_phrase_2

Enter the expression for the discriminant:

Correct_answer_2

!qcmath b^2 - 4*c

Hints_2

Try again, possibly after looking in a book. [A correct answer could be b^2 - 4*c]

Reward_2

3 Correct.

Qstn_name_number_3

Qstn_phrase_3

Enter the expression for the smallest root:

Correct_answer_3

!qcmath (-b -sqrt(D))/2

Hints_3

Try again. [A correct answer could be (-b -sqrt(D))/2]

Reward_3

4 Correct.

Qstn_name_number_4

Qstn_phrase_4

Enter the expression for the largest root:

Correct_answer_4

!qcmath (-b +sqrt(D))/2

Hints_4

Try again. [A correct answer could be (sqrt(D)-b)/2]

Reward_4

1 Correct. Back to the first question.

Qstn_name_number_5

Qstn_phrase_5

The next questions illustrate other ways of presenting the same questions. First with fields in the question phrase for entering each expression:

Enter for the polynomial equation x^2 + b*x + c = 0

the discriminant D [30],
the smallest root [30] and
the largest root [30].

Correct_answer_5

[ !qcmath b^2 - 4*c ] [ !qcmath (-b-sqrt(D))/2 ] [ !qcmath (-b +sqrt(D))/2 ]

Hints_5

You must have made a typo. Try again.

Reward_5

6

Qstn_name_number_6

Qstn_phrase_6

Enter the discriminant and the two roots to the polynomial equation x^2 + b*x + c = 0, thus 3 expressions written in any order:

Correct_answer_6

{ !qcmath b^2 - 4*c }{ !qcmath (-b -sqrt(D))/2 }{ !qcmath (-b +sqrt(D))/2 }

Hints_6

You must have made a typo. Try again.

Reward_6

7

Qstn_name_number_7

Qstn_phrase_7

Enter anyone of the roots:

Correct_answer_7

{.1 !qcmath (-b -sqrt(D))/2 }{ !qcmath (-b +sqrt(D))/2 }

Hints_7

Try again. Did you make a typo?

Reward_7

Qstn_name_number_8

8

Qstn_phrase_8

Correct_answer_8

Hints_8

Reward_8

Qstn_name_number_9

9

Qstn_phrase_9

Correct_answer_9

Hints_9

Reward_9

Qstn_name_number_10

10

Qstn_phrase_10

Correct_answer_10

Hints_10

Reward_10

Specs_from_quiz #

Specify in the following entry fields your own texts for communication with answerers. For quizzes being created using a schema not containing such specifications you can obtain the same effect by referring to a quiz created with this schema.

Text_before_qstn_number #

Text_after_qstn_number #

Field_dimensions #

60 60 6

Text_before_submit_button #

When ready click this button:

Text_on_submit_button #

SUBMIT THIS FORM

Text_before_answer_count_pr_qstn #

This question answered correctly with answer number %%.

Text_all_qstns_answered_correctly #

Congratulations! you have answered all questions correctly. Number of incorrect answers: %%.

Text_this_qstn_answered_correctly #

This question was answered correctly:

Text_one_qstn_answered_but_incorrectly #

You answered one question but the answer was incorrect. Therefore only that question is presented again (the remaining questions will be presented thereafter):

Text_more_qstns_answered_incorrectly #

The following questions were answered incorrectly or not answered at all:

Text_on_printing_answer #

Click browsers print option for a copy of this form including your answers.

Text_on_print_identification #

Optional identification for print:

Text_bad_type_or_format_of_answer #

Answer or answer part is of wrong type or has a bad format:

Text_final_message #

Name_quiz_with_logo_definition #

Name_quiz_with_CSS_definition #

Name_quiz_with_script_definition #