453 results.
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Question in Content created by Newcastle University
Find the solution of a first order separable differential equation of the form $(a+x)y'=b+y$.
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Question in Content created by Newcastle University
Find the solution of a first order separable differential equation of the form $(a+y)y'=b+x$.
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Question in Content created by Newcastle University
Find the solution of a first order separable differential equation of the form $axyy'=b+y^2$.
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Question in Content created by Newcastle University
Find the solution of a first order separable differential equation of the form $a\sin(x)y'=by\cos(x)$.
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Question in Content created by Newcastle University
Trying out something: get the student to enter a set for each of "regular singular points" and "essential singular points".
Find and classify singular points of a second-order ordinary differential equation. One equation is chosen from a selection of 10.
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Question in Content created by Newcastle University
Power series solution of $y''+axy'+by=0$ about $x=0$.
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Question in Content created by Newcastle University
Two ordered data sets, each with 10 numbers. Find the sample standard deviation for each and for their sum.
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Question in Content created by Newcastle University
A box contains $n$ balls, $m$ of these are red the rest white.
$r$ are drawn without replacement.
What is the probability that at least one of the $r$ is red?
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Question in Content created by Newcastle University
Question on $\displaystyle{\lim_{n\to \infty} a^{1/n}=1}$. Find least integer $N$ s.t. $\ \left |1-\left(\frac{1}{c}\right)^{b/n}\right| \le10^{-r},\;n \geq N$
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Question in Content created by Newcastle University
Let $x_n=\frac{an+b}{cn+d},\;\;n=1,\;2\ldots$. Find $\lim_{x \to\infty} x_n=L$ and find least $N$ such that $|x_n-L| \le 10^{-r},\;n \geq N,\;r \in \{2,\;3,\;4\}$.
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Question in Content created by Newcastle University
Seven standard elementary limits of sequences.
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Question in Content created by Newcastle University
Using simple substitution to find $\lim_{x \to a} bx+c$, $\lim_{x \to a} bx^2+cx+d$ and $\displaystyle \lim_{x \to a} \frac{bx+c}{dx+f}$ where $d\times a+f \neq 0$.
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Question in Content created by Newcastle University
Multiple response question (4 correct out of 8) covering properties of convergent and divergent sequences and boundedness of sets. Selection of questions from a pool.
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Question in Content created by Newcastle University
$x_n=\frac{an+b}{cn+d}$. Find the least integer $N$ such that $\left|x_n -\frac{a}{c}\right| \le 10 ^{-r},\;n\geq N$, $2\leq r \leq 6$.
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Question in Content created by Newcastle University
Find the first 3 terms in the MacLaurin series for $f(x)=(a+bx)^{1/n}$ i.e. up to and including terms in $x^2$.
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Question in Content created by Newcastle University
$A,\;B$ $2 \times 2$ matrices. Find eigenvalues and eigenvectors of both. Hence or otherwise, find $B^n$ for largish $n$.
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Question in Content created by Newcastle University
Given a 3 x 3 matrix, and two eigenvectors find their corresponding eigenvalues. Also fnd the characteristic polynomial and using this find the third eigenvalue and a normalised eigenvector $(x=1)$.
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Question in Content created by Newcastle University
$A$ 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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Question in Content created by Newcastle University
Exercise using a given uniform distribution $Y$, calculating the expectation and variance as well as asking for the CDF. Also finding $P(Y \le a)$ and $P( b \lt Y \lt c)$ for a given values $a,\;b,\;c$.
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Question in Content created by Newcastle University
Given three linear combinations of four i.i.d. variables, find the expectation and variance of these estimators of the mean $\mu$. Which are unbiased and efficient?
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Question in Content created by Newcastle University
Given $5$ vectors in $\mathbb{R^4}$ determine if a spanning set for $\mathbb{R^4}$ or not by looking for any simple dependencies between the vectors.
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Question in Content created by Newcastle University
Given the following three vectors $\textbf{v}_1,\;\textbf{v}_2,\;\textbf{v}_3$ Find out whether they are a linearly independent set are not. Also if linearly dependent find the relationship $\textbf{v}_{r}=p\textbf{v}_{s}+q\textbf{v}_{t}$ for suitable $r,\;s,\;t$ and integers $p,\;q$.
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Question in Content created by Newcastle University
Given $6$ vectors in $\mathbb{R^4}$ and given that they span $\mathbb{R^4}$ find a basis.
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Question in Content created by Newcastle University
Let $P_n$ denote the vector space over the reals of polynomials $p(x)$ of degree $n$ with coefficients in the real numbers. Let the linear map $\phi: P_4 \rightarrow P_4$ be defined by: \[\phi(p(x))=p(a)+p(bx+c).\]Using the standard basis for range and domain find the matrix given by $\phi$.
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Question in Content created by Newcastle University
Let $P_n$ denote the vector space over the reals of polynomials $p(x)$ of degree $n$ with coefficients in the real numbers.
Let the linear map $\phi: P_4 \rightarrow P_4$ be defined by:
$\phi(p(x))=ap(x) + (bx + c)p'(x) + (x ^ 2 + dx + f)p''(x)$
Using the standard basis for range and domain find the matrix given by $\phi$.
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Question in Content created by Newcastle University
Example showing how to calculate the probability of A or B using the law $p(A \;\textrm{or}\; B)=p(A)+p(B)-p(A\;\textrm{and}\;B)$.
Also converting percentages to probabilities.
Easily adapted to other applications.
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Question in Content created by Newcastle University
Converting odds to probabilities.
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Question in Content created by Newcastle University
Given a large number of gambles, find the expected profit.
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Question in Content created by Newcastle University
Given a random variable $X$ normally distributed as $\operatorname{N}(m,\sigma^2)$ find probabilities $P(X \gt a),\; a \gt m;\;\;P(X \lt b),\;b \lt m$.
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Question in Content created by Newcastle University
Given 32 datapoints in a table find their minimum, lower quartile, median, upper quartile, and maximum.