Reference no: EM133082716

Unit 39 Further Maths - Pearson Higher Nationals in Engineering

You are required to solve the following problems ensuring working is shown as required.

1. Use applications of number theory in practical engineering situations
2. Solve systems of linear equations relevant to engineering applications using matrix methods

Learning Outcome 1: Use applications of number theory in practical engineering situations

Learning Outcome 2: Solve systems of linear equations relevant to engineering applications using matrix methods

Assignment Brief:

Question 1: As the new Engineering intern for a programming firm, you are required to prove your knowledge of base conversions to be placed on a specialized team. Perform the following base conversions and calculations to provide as samples to the Engineering Manager:
A. Convert 10100101₂ into its hexadecimal equivalent.
B. Convert 9F₁₆ into its binary and decimal equivalent.
C. Convert 98₁₆ into its binary and decimal equivalent.
D. Convert 238₁₀ into its hexadecimal equivalent.
E. Hence add 9F₁₆ to 98₁₆ giving your solution in hexadecimal.
F. Hence multiply 9F₁₆ by 98₁₆ giving your solution in hexadecimal.

Question 2: In an electrical circuit, three resistors are in series with each other. Their resistances are represented by the complex numbers shown below:

R₁ = 2+4i ohms R₂ = 1+3i ohms R₃ = 3-5i ohms

Determine the effective resistance in the circuit.

Question 3: In an electrical system the two current values are represented by the following complex numbers: 3+4i Amps and 2-3i Amps find the following for each:
A. Modulus
B. Argument
C. Polar forms of the current
D. Exponential forms of the current
E. Conjugate
F. Solve 2-3i/3+4i
G. Add 3+4i to 2-3i in the polar form
H. Add 3+4i to 2-3i in the exponential form

Question 4: The complex numbers (1 + 2i)⁶ and (6 + 5i)³ represent the points at which eccentric masses must be placed on a system to provide dynamic balance. Use De Moivre's Theorem to convert the complex numbers into their polar and rectangular forms as requested to determine the exact distance from the origin required.
A. (1 + 2i)⁶ in the polar form (r,θ)
B. (6 + 5i)³ in rectangular form (a + bi)

Question 5: While performing design calculations as the lead Mechanical Engineer for ABC Engineering Solutions Ltd, you are required to use the known Trigonometric identity: (cosθ + isinθ)² = cos 2θ + isin 2θ. An Engineering trainee enquires about the correctness of this identity to which you indicate there is a procedure to prove that it is correct. Using De Moivre's Theorem test the correctness of the following trigonometric identity:
(cosθ + isinθ)² = cos 2θ + isin 2θ

Question 6: Your analysis of a free body diagram indicates that there are three variables. Via a series of test, you are confident that the following 3 x 3 matrix can be used to assist in relating the three variables. To prove that the three variables are related, Find the determinant of the 3x3 matrix:

4 -7 6
[-2 4 0 ]
5 7 -4

Question 7: The following system of linear equations represent the relationship between quality (x) duration (y) and cost (z) variables for an engineering project. Using the Gaussian Elimination Method solve the system of equations below and determine the required quality, duration, and cost variables.
2 x + 4 y + 6 z = 4
x + 5 y + 9 z = 2
2 x + y + 3 z = 7

Question 8: The variables mass (x) and velocity (y) of a system in motion are related by the following pair of linear equations. Using the inverse Matrix method, solve the following set of linear equations:
3x +4y = 0
2x +5y +7 =0

Question 9: Using the software on matrixcalc validate the solutions to the system of linear equations from question (7):

2 x + 4 y + 6 z = 4
x + 5 y + 9 z = 2
2 x + y + 3 z = 7
(Submit screen shots for your validation)