655 results authored by Christian Lawson-Perfect - search across all users.
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4 questions on using partial fractions to solve indefinite integrals.
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Statistics and probability. 2 questions. Both simple regression. First with 8 data points, second with 10. Find $a$ and $b$ such that $Y=a+bX$. Then find the residual value for one of the data points.
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11 Questions on the chain rule.
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13 questions on combining algebraic fractions. An area in which students often need practice.
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Two questions on completing the square. The first asks you to express $x^2+ax+b$ in the form $(x+c)^2+d$ for suitable numbers $c$ and $d$. The second asks you to complete the square on the quadratic of the form $ax^2+bx+c$ and then find its roots.
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Statistics and probability. Practice on correlation questions.
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Entering numbers and algebraic symbols in Numbas.
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Details on inputting numbers into Numbas.
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Information on inputting powers
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Inputting algebraic expressions into Numbas.
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Instructions on inputting ratios of algebraic expressions.
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Instructions on dealing with functions in Numbas.
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$A$ a $3 \times 3$ matrix. Using row operations on the augmented matrix $\left(A | I_3\right)$ reduce to $\left(I_3 | A^{-1}\right)$.
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Find the determinant and inverse of three $2 \times 2$ invertible matrices.
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Given a codeword in $w=\mathbb{Z}^4_3$ find and list all codewords at Hamming distance $1$ from $w$.
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Vetnet question.
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Paired t-test to see if there is a difference between responses after treatment.
