160 results authored by Julie Crowley - search across all users.
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Question in Julie's workspace
Annuity question as a filling in a formulae exercise
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Question in Julie's workspace
Simple interest.
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Question in Julie's workspace
Simple Percentages
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Question in Julie's workspace
Inverse Laplace transform if trig functions.
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Question in Julie's workspace
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Question in Julie's workspace
Laplace transform of e^{at}
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Question in Julie's workspace
Expansion of two brackets
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Question in Julie's workspace
Multiplying and dividing decimals
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Question in Julie's workspace
Order of Operations
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Question in Julie's workspace
Rotate $y=a(\cos(x)+b)$ by $2\pi$ radians about the $x$-axis between $x=c\pi$ and $x=(c+2)\pi$. Find the volume of revolution.
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Question in Julie's workspace
Finding areas under graphs using definite integration.
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Question in Julie's workspace
Find $\displaystyle \int\frac{ax+b}{(1-x^2)^{1/2}} \;dx$. Solution involves inverse trigonometric functions.
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Question in Julie's workspace
Summation Notation
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Question in Julie's workspace
Evaluate $\int_1^{\,m}(ax ^ 2 + b x + c)^2\;dx$, $\int_0^{p}\frac{1}{x+d}\;dx,\;\int_0^\pi x \sin(qx) \;dx$, $\int_0^{r}x ^ {2}e^{t x}\;dx$
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Question in Julie's workspace
Scores in 20 games and frequency given -- calculate mean.
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Question in Julie's workspace
Scores (including negatives) in 20 games and frequency given -- calculate mean.
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Question in Julie's workspace
Find the general solution of $y''+2py'+(p^2-q^2)y=x$ in the form $Ae^{ax}+Be^{bx}+y_{PI}(x),\;y_{PI}(x)$ a particular integral.
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Question in Julie's workspace
Find the solution of $\displaystyle x\frac{dy}{dx}+ay=bx^n,\;\;y(1)=c$
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Question in Julie's workspace
Find the solution of $\displaystyle \frac{dy}{dx}=\frac{1+y^2}{a+bx}$ which satisfies $y(1)=c$
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Question in Julie's workspace
Solve 4 first order differential equations of two types:$\displaystyle \frac{dy}{dx}=\frac{ax}{y},\;\;\frac{dy}{dx}=\frac{by}{x},\;y(2)=1$ for all 4.
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Question in Julie's workspace
Basic data structures and maths/stats functionality given.
You can configure the rest.
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Question in Julie's workspace
Expand out brackets to simplify an algebraic expression.
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Question in Julie's workspace
Using e to solve equations involving the natural log
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Question in Julie's workspace
Transposition
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Question in Julie's workspace
Transposing formulae
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Question in Julie's workspace
Given random set of data (between 13 and 23 numbers all less than 100), find their stem-and-leaf plot.
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Question in Julie's workspace
Calculate the annual interest rate for a savings account where A, P and n are given.
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Question in Julie's workspace
Match the question with the correct formula.
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Question in Julie's workspace
A 1-year lease for a company car requires a payment of €280 at the end of each month. Find the present value of these payments if the annual interest rate is 7% compounded monthly.
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Question in Julie's workspace
Find i using compound interest formula A=P(1+i)^n
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