460 results.
-
Question in Content created by Newcastle University
Find minimum distance between a point and a line in 3-space. The line goes through a given point in the direction of a given vector.
The correct solution is given, however the accuracy of 0.001 is not enough as in some cases answers near to the correct solution are also marked as correct.
-
Question in Content created by Newcastle University
Three 3 dim vectors, one with a parameter λ in the third coordinate. Find value of λ ensuring vectors coplanar. Scalar triple product.
-
Question in Content created by Newcastle University
Given vectors A,B, find A×B
-
Question in Content created by Newcastle University
Given two 3 dim vectors, find vector equation of line through one vector in the direction of another. Find two such lines and their point of intersection.
-
Question in Content created by Newcastle University
Calculation of the length and alternative form of the parameteric representation of a curve, involving trigonometric functions.
-
Question in Content created by Newcastle University
Find ∫Γ(x+y)dx+(y−x)dy,Γ is the line from (0,0) to (a,b).
-
Question in Content created by Newcastle University
xn=an2+bcn2+d. Find the least integer N such that |xn−ac|<10−r,n≥N, 2≤r≤6. Determine whether the sequence is increasing, decreasing or neither.
-
Question in Content created by Newcastle University
Multiple response question (4 correct out of 8) covering properties of convergent and divergent series and including questions on power series. Selection of questions from a pool.
-
Question in Content created by Newcastle University
Outward normals to the surfaces enclosing a region; volume of that enclosed region.
-
Question in Content created by Newcastle University
Outward normals to the surfaces enclosing a region; volume of that enclosed region.
-
Question in Content created by Newcastle University
Cartesian form of the parametric representation of a surface, normal vector, and magnitude.
-
Question in Content created by Newcastle University
Cartesian form of the parametric representation of a surface, normal vector, and magnitude.
Accuracy for part c) should be made more stringent as can be marked correct for an incorrect answer. Use a different sample range rather than 0 to 1 would help as would setting accuracy to something less than 0.001.
-
Question in Content created by Newcastle University
Intersection points, tangent vectors, angles between pairs of curves, given in parametric form.
-
Question in Content created by Newcastle University
Find a unit vector orthogonal to two others.
Uses ∧ for the cross product. The interim calculations should all be displayed to enough dps, not 3, to ensure accuracy to 3 dps. If the cross product has a negative x component then it is not explained that the negative of the cross product is taken for the unit vector.
-
Question in Content created by Newcastle University
Find the unit vector parallel to a given vector.
Interim calculations in Advice should be presented in enough accuracy to ensure that the final calculations are to 3dps.
-
Question in Content created by Newcastle University
Find the cosine of the angle between two pairs of 3D and 4D vectors.
The calculations and answers are correct, however the Advice should display the interim calculations of the lengths of vectors and their products to say 6dps. At present the student may be mislead into using 2dps at each stage - the instruction at the start of Advice is somewhat confusing.
-
Question in Content created by Newcastle University
Double integrals (2) with numerical limits
-
Question in Content created by Newcastle University
Elementary operations on vectors; sum, modulus, unit vector, scalar multiple.
-
Question in Content created by Newcastle University
Unit normal vector to a surface, given in Cartesian form.
-
Question in Content created by Newcastle University
Curl of a vector field.
Should warn that multiplied terms need * to denote multiplication.
-
Question in Content created by Newcastle University
Find all points for which the gradient of a scalar field is orthogonal to the z-axis.
Should warn that multiplied terms need * to denote multiplication.
-
Question in Content created by Newcastle University
Determine the correct parametric representation of a given curve. Curve is randomly chosen from a set of 20.
The graph of the curve was not displayed on my machine.
-
Question in Content created by Newcastle University
Determine if various combinations of vectors are defined or not.
-
Question in Content created by Newcastle University
No description given
-
Question in Content created by Newcastle University
Divergence of vector fields.
-
Question in Content created by Newcastle University
Gradient of f(x,y,z).
Should warn that multiplied terms need * to denote multiplication.
-
Question in Content created by Newcastle University
Interpreting the minitab output from a logistic regression model of salary against obesity as measured by BMI.
-
Question in Content created by Newcastle University
Two factor ANOVA example
-
Question in Content created by Newcastle University
Two-way ANOVA example, 5 subjects, 4 treatments.
-
Question in Content created by Newcastle University
One-way ANOVA example