317 results authored by Simon Thomas - search across all users.
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Question in Algebra
Solve for x and y: a1x+b1y=c1a2x+b2y=c2
The included video describes a more direct method of solving when, for example, one of the equations gives a variable directly in terms of the other variable.
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Question in Algebra
Shows how to define variables to stop degenerate examples.
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Exam (4 questions) in Algebra
No description given
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Question in Maths support
Rearranging equations to change the subject
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Question in Maths support
Another transposition question, which requires (basic) factorisation.
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Question in Maths support
rearranging the Michelas-Menten equation to make the substrate the subject.
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Question in Maths support
Given ∫(ax+b)ecxdx=g(x)ecx+C, find g(x). Find h(x), ∫(ax+b)2ecxdx=h(x)ecx+C.
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Exam (6 questions) in Calculus
5 questions on using substitution to find indefinite integrals.
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Question in Calculus
Find ∫a(bx+c)ndx
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Exam (4 questions) in Calculus
4 questions on integrating by parts.
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Question in Calculus
Evaluate ∫m0eaxdx, ∫p01bx+ddx,∫π/20sin(qx)dx.
No solutions given in Advice to parts a and c.
Tolerance of 0.001 in answers to parts a and b. Perhaps should indicate to the student that a tolerance is set. The feedback on submitting an incorrect answer within the tolerance says that the answer is correct - perhaps there should be a different feedback in this case if possible for all such questions with tolerances.
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Question in Maths support
Evaluate ∫m1(ax2+bx+c)2dx, ∫p01x+ddx,∫π0xsin(qx)dx, ∫r0x2etxdx
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Question in Maths support
Definite Integrals
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Question in Calculus
Find ∫ax3+ax+b1+x2dx. Enter the constant of integration as C.
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Question in Maths support
5 indefinite integrals containing exponential functions
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Question in Maths support
Indefinite Integrals
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Question in Calculus
Antiderivatives
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Question in Calculus
Integrate f(x)=aebx+csin(dx)+pxq. Must input C as the constant of integration.
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Question in Maths support
Definite Intgerals
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Question in Differential Equations
Power series solution of y″ about x=0.
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Question in Differential Equations
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 Differential Equations
Find the solution of a first order separable differential equation of the form (a+x)y'=b+y.
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Question in Differential Equations
Find the solution of a first order separable differential equation of the form (a+y)y'=b+x.
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Question in Differential Equations
Find the solution of a first order separable differential equation of the form axyy'=b+y^2.
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Question in Differential Equations
Find the solution of \displaystyle x\frac{dy}{dx}+ay=bx^n,\;\;y(1)=c
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Question in Differential Equations
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 Differential Equations
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 Calculus
Find the stationary point (p,q) of the function: f(x,y)=ax^2+bxy+cy^2+dx+gy. Calculate f(p,q).
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Question in Calculus
Find the coordinates of the stationary point for f: D \rightarrow \mathbb{R}: f(x,y) = a + be^{-(x-c)^2-(y-d)^2}, D is a disk centre (c,d).
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Question in Calculus
Find the stationary points of the function: f(x,y)=a x ^ 3 + b x ^ 2 y + c y ^ 2 x + dy by choosing from a list of points.