Notes, summaries, assignments, exams, and problems for Baccalaureate

Analyzing Algorithm Efficiency

Exponential Recursive Calls

return f(n-1) + f(n-1)

❌ Very bad algorithm
Why: It results in an exponential number of calls and massive recomputation.
Better: Use iterative multiplication or fast exponentiation.

Recursive vs. Iterative Practice

S(n) = S(n-1) + n*n*n

⚠️ Same asymptotic cost as iterative, but worse in practice
Why: Recursion adds significant stack overhead.
Better: Use a loop or a closed-form formula.

Efficient Linear Algorithms

return Q(n-1) + 2*n - 1

✅ Efficient linear algorithm

Multiplications: Θ(n), Additions: Θ(n).
Why: There is no redundant computation.

Optimal Element Inspection

temp = recursive call
if temp <= A[n-1]

✅ Optimal
Why: You must look at every element; therefore, Θ(n) is unavoidable.... Continue reading "Algorithm Efficiency and Summation Reference" »

1. Complete these sentences

• If you get paid badly, you earn too little money.
• A dead-end job offers no opportunities for promotion.
• A stressed worker will probably have mental health problems.
• If you’re out of work, you have lost your job.
• When you plan your work, you accomplish your tasks.
• When a person gets fired, his or her job has come to an end.

2. Correct form of the words in brackets

• I’m sorry, but I don’t feel you’ve got the proper qualifications for this position.
• I need someone reliable. I couldn’t depend on the last few workers.
• They announced her resignation. We’re all going to miss her.
• It’s just seasonal work during the summer months.
• He hopes to work his way up to a managerial position.

3. Complete with the most suitable word

• I’m

1. Advantages and Disadvantages of Living in the Suburbs

Living in the suburbs is common for many families. The suburbs are usually outside the city center. People choose this lifestyle for different reasons. There are advantages and disadvantages to living in the suburbs.

On the one hand — suburbs are quiet and calm. There is less noise and less pollution. Houses are bigger, and there are more green spaces. It is a good place for families and children.

• Quieter environment: less noise and less pollution.
• Larger homes: houses are typically bigger with more outdoor space.
• More green space: parks and gardens are common.
• Family-friendly: suitable for children and family life.

On the other hand — suburbs are far from the city. People often need a car... Continue reading "Suburbs, Graffiti, and Gentrification: Pros and Cons" »

Alright, let’s make Cell Structure & Cell Theory feel alive—less textbook, more story 👇

What is a Cell? The Mini City of Life

A cell is the tiniest unit of life—like a mini city that keeps everything running.
Your body isn’t one big thing; it’s a community of trillions of cells, each doing its own job but working together so you can breathe, think, move, and feel.

The Three Fundamental Rules of Cell Theory

Cell theory is basically biology’s ground rules. Three simple but powerful ideas:

1. All Living Things Are Composed of Cells

From a tiny bacterium to a giant banyan tree to you—everything alive is built from cells.
Some organisms have one cell, others have millions or trillions, but no cell = no life.

2. The Cell Is the Basic

Philanthropy and Social Responsibility Analysis

True or False: Historical Philanthropy

• a. Rockefeller and Carnegie were both philanthropists. → TRUE: “John D. Rockefeller and Andrew Carnegie made their money in the oil and steel industries respectively, but both of them wanted to make sure their money would make an impact on society and set up their own philanthropic foundations.”
• b. The Cadbury Trust supports the same causes as its founders did. → FALSE: “But clearly not everything is the same as it was 100 years ago.”
• c. Governments now support health and education less than they did 100 years ago. → FALSE: “The biggest change affecting the foundations has probably been the growth of government, with state funding now covering

Research Methods Cheat Sheet

1. Quantitative Research

Purpose: To measure variables, test hypotheses, and generalize findings using numerical data.

Key Features

• Uses large, statistically significant samples
• Employs structured tools like surveys, experiments, or questionnaires
• Focuses on “how many,” “how often,” or correlations between variables
• Analysis is statistical

Strengths

• Standardized and replicable
• Can generalize findings
• Allows identification of patterns and trends

Limitations and Potential Biases

• May miss context or personal experiences
• Small sample sizes or poor sampling methods can introduce bias
• Cannot always answer “why” or “how” questions

2. Qualitative Research

Purpose: To examine experiences, perceptions, and meanings.

Key Features

• Uses

Future Career and Travel Ambitions

Personal Vision

In the future, I think my life will be very different from how it is now. I have many dreams and plans, and I'm going to work hard to make them real. For me, the next years will be full of changes and new opportunities. First of all, in five years I'm going to be a programmer. I imagine myself working in something I really enjoy, and I'm sure I will be very happy in this world. Even so, I won't stop studying, because I know I will need to keep learning new things all the time. I'm especially interested in new technologies, so I'm going to explore areas like cybersecurity and data, since they are fields that really motivate me. Moreover, I would love to travel a lot. I think I will live in another

Essential Marketing Frameworks and Strategy Models

1. The POEM Framework: Paid, Owned, and Earned Media

POEM helps marketers plan and evaluate how they reach audiences across various channels.

• Paid Media: Channels you pay for (e.g., ads, sponsored posts).
  • Visibility
  • Targeting
  • Scalable Reach
• Owned Media: Channels you control (e.g., website, blog, social media profiles).
  • Brand Consistency
  • Build Relationships
  • Collect Audience Data
• Earned Media: Organic exposure (e.g., public relations, shares, mentions, word-of-mouth).
  • Trust and Credibility
  • Amplify Reach

2. Understanding the Customer Journey

The Customer Journey represents the complete experience an audience member has with a brand, typically moving through these stages:

1. Awareness
2. Consideration
3. Purchase
4. Use
5. Retention
6. Loyalty
7. Advocacy

Key

Core Marketing and Business Definitions

1. Market Segmentation Fundamentals

Segmentation is the process of dividing the market into groups with similar traits. Key types include:

• Geographic (GEO)
• Demographic (DEMOGRA)
• Psychographic (PSYCHO)
• Behavioral (BEHAVIORAL)

Why Segmentation Matters:

It helps target the right audience, personalize marketing strategies, and improve overall efficiency.

2. Inbound vs. Outbound Marketing

Inbound Marketing:

A strategy that attracts customers through valuable content, Search Engine Optimization (SEO), social media, and engagement. Customers come to you.

Outbound Marketing:

A traditional approach that pushes messages to potential customers through advertisements, cold calls, and direct mail.

3. Defining Business Stakeholders

Stakeholders... Continue reading "Essential Marketing Concepts and Strategy Definitions" »