Homework Help is Here – Start Your Trial Now!
Math
Advanced Math
Q-3: a) Find the smallest positive integer a in the encryption function f(x) = (ax + 7) mod 26,0 ≤ x ≤ 25, such that the function encodes the letter "H" by "C". Use the function to encrypt the message "NEED HELP". b) Prove that: If n is an integer that is not a multiple of 3, then n² = 1 mod 3.

Q-3: a) Find the smallest positive integer a in the encryption function f(x) = (ax + 7) mod 26,0 ≤ x ≤ 25, such that the function encodes the letter "H" by "C". Use the function to encrypt the message "NEED HELP". b) Prove that: If n is an integer that is not a multiple of 3, then n² = 1 mod 3.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
See similar textbooks
icon
Related questions
Question
Question
Q-3: a) Find the smallest positive integer a in the encryption function = (ax + 7) mod 26,0 ≤ x ≤ 25, f(x) = such that the function encodes the letter "H" by "C". Use the function to encrypt the message "NEED HELP". b) Prove that: If n is an integer that is not a multiple of 3, then n² = 1 mod 3.
Transcribed Image Text:Q-3: a) Find the smallest positive integer a in the encryption function = (ax + 7) mod 26,0 ≤ x ≤ 25, f(x) = such that the function encodes the letter "H" by "C". Use the function to encrypt the message "NEED HELP". b) Prove that: If n is an integer that is not a multiple of 3, then n² = 1 mod 3.
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,
SEE MORE TEXTBOOKS