Two parts to demonstrate kinds of feedback loop in a Numbas part: correctness, and refining an answer.

A line with random $x$- and $y$- intercepts is plotted, and you have to drag two dots over the points where the line crosses the $x$ and $y$ axes.

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Omvormen van formules

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Questions on basic integration, including indefinite and definite.

Convert figures for car engine sizes between cc (cm^3), litres, and m^3.

Tension in bracket-truss.

Tension in a simple triangular truss.

Tension in simple triangular truss.

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Calculations involving elementary probability, and several questions designed to draw out misconceptions to do with probability.

Find $\displaystyle \int \frac{2ax + b}{ax ^ 2 + bx + c}\;dx$

Class Test covering

• Basic Probability
• Binomial Distribution
• Normal Distribution
• Confidece Intervals

JPO 126 Class test 7

Denominators with linear factors, repeated factors and non-factorisable quadratics.

Determinant of n x m matrix by Laplace Expansion across top row.

Given descriptions of  3 random variables, decide whether or not each is from a Poisson or Binomial distribution.

en test

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Topics: Trigonometeric equations and complex numbers
Students must complete the exam within 90 mins (standard time).
Questions have variables to produce randomised questions.

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Finding the modulus and argument (in radians) of four complex numbers; the arguments between $-\pi$ and $\pi$ and careful with quadrants!

Direct calculation of low positive and negative powers of complex numbers. Calculations involving a complex conjugate. Powers of $i$. Four parts.

Inverse and division of complex numbers.  Four parts.

Multiplication and addition of complex numbers. Four parts.