234 results for "negative".
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Question in MfEP Progress Quizzes
Students need to solve a quadratic equation and recognise that only the positive root has physical significance. Roots are randomised with one always negative and one positive. Equation can be factorised fairly easily or the quadratic formula can be used to find the solution. Advice gives solution by factorisation.
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Question in MfEP Progress Quizzes
Student needs to solve a quadratic equation to calculate time taken for a diver to hit the water after diving from a diving board. Height of the board and initial upward velocity of the diver are randomly generated values. student needs to know that surface of the water is height 0, and only positive root of quadratic has physical meaning. Question is set to always give one positieve and one negative root.
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Question in MfEP Progress Quizzes
This question is an application of a quadratic equation. Student is given dimensions of a rectangular area, and an area of pavers that are available. They are asked to calculate the width of a border that can be paved around the given rectangle (assuming border is the same width on all 4 sides). The equation for the area of the border is given in terms of the unknown border width. Students need to recognise that only one solution of the quadratic gives a physically possible solution.
The dimensions of the rectangle, available area of tiles and type of space are randomised. Numeric variables are constructed so that resulting quadratic equation has one positive and one negative root.
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Question in Skills Audits for Maths and Stats
Calculations with negative numbers.
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Question in Skills Audits for Maths and Stats
Calculations with negative numbers.
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Question in Skills Audits for Maths and Stats
Calculations with negative numbers.
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Question in Skills Audits for Maths and Stats
Calculations with negative numbers.
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Question in Skills Audits for Maths and Stats
Calculations with negative numbers.
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Question in Skills Audits for Maths and Stats
Differentiate a polynomial expression involving coefficients and, negative and fractional indices.
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Question in Skills Audits for Maths and Stats
Factorise three quadratic equations of the form $x^2+bx+c$.
The first has two negative roots, the second has one negative and one positive, and the third is the difference of two squares.
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Question in Skills Audits for Maths and Stats
perform a calculation involving negative indices.
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Merryn's copy of Fractions: adding and subtracting, numerical, already with common denominator Ready to useQuestion in MESH
Fractions already have a common denominator. Addition and subtraction 50:50 split, when subtracting, the answer is negative half the time. Students shouldn't have to worry about reducing fractions by design.
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Question in How-tos
The expected answer involves the logarithm of a negative number, which doesn't have a unique solution.
The part's marking algorithm evaluates the exponential of the student's answer and the expected answer, and compares those.
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Question in How-tos
The expected answer involves the logarithm of a negative number, which doesn't have a unique solution.
The part's marking algorithm checks that the student's answer differs from the expected answer by a multiple of $2\pi$.
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Question in HELM books
Evaluate pi / (2r+s) given values for r and s (r>0, s positive or negative)
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Question in HELM books
evaluate the function y=ax+b for given values of a,b and x, each of which may be positive or negative.
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Exam (17 questions) in Martin's workspace
Quiz designed to test integration of powers of x including negative powers, surds, fractions, etc.
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Question in Trigonometry
testing sin, cos, tan of angles that are negative or greater than 2pi radians that result in nice exact values.
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Question in Foundation Maths
A quartic is given and the student is asked whether the gradient is positive or negative at various values of x.
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Question in pre-algebra Numeracy and Arithmetic
No description given
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Question in pre-algebra Numeracy and Arithmetic
No description given
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Question in pre-algebra Numeracy and Arithmetic
No description given
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Question in pre-algebra Numeracy and Arithmetic
No description given
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Question in pre-algebra Numeracy and Arithmetic
No description given
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Question in pre-algebra Numeracy and Arithmetic
No description given
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Question in HELM books
Given an expression (either a^-k or 1/a^-k) with a negative index, rewrite it with a positive index.
The variable a and the index k are randomised.
Part of HELM Book 1.2
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Question in HELM books
Divide two numbers, at least one of which is negative. The answer is always an integer.
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Question in HELM books
Multiply two numbers, at least one of which is negative.
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Question in HELM books
Compute the modulus of (a) a positive rational, (b) a negative rational, (c) 0
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Question in HELM books
Write an expression (a^k1*a^k2)/a^k3 using a single positive index. Variable a is randomised and can be a number or a letter. k1,k2 and k3 are randomised and can be positive or negative numbers.
Part of HELM Book 1.2