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Active Archive
All Topics Algebra Calculus Number Theory Combinatorics Applied Math
Applied Math
★ ★★★★

Compound Interest

An investment of 10,000 USD earns 5% per year for 10 years, compounded once …

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Applied Math
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Kinetic Energy

An athlete with a mass of $70$ kg sprints at a constant velocity of …

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Applied Math
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Linear Elasticity

A synthetic climbing rope stretches by $\Delta x = 0.5$ meters when subjected to …

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Applied Math
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Portfolio Expected Return

A portfolio consists of two assets. Asset A has a weight of 60% and …

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Applied Math
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Simple-Interest

An investment of 10,000 USD earns 5% per year for 10 years using simple …

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Applied Math
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Velocity Conversion

You travel 36 km in 60 minutes. Calculate average velocity in $m/s$.

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Applied Math
★★ ★★★

Expected Value

An algorithmic trading strategy has a $40\%$ probability of generating a profit of $1000$ …

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Applied Math
★★ ★★★

Portfolio Duration

Portfolio A has a duration of 4.5 and a market value of 2,000,000 USD. …

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Applied Math
★★ ★★★

Portfolio Variance (Two Assets)

A portfolio consists of two assets. The variances are 0.04 and 0.09. The covariance …

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Applied Math
★★ ★★★

The Water Lily Problem

Water lilies double daily. Full after 100 days. When was it half full?

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Applied Math
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Vertical Projectile

A mass is launched perfectly vertically upwards from the ground with an initial velocity …

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Applied Math
★★★ ★★

A4 Paper Ratio

A4 paper keeps ratio when folded in half. If long side is 1, what …

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Applied Math
★★★ ★★

Continuous Compounding

An initial capital is invested at a continuous compounding interest rate $r$. Provide the …

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Applied Math
★★★ ★★

Parametric Value at Risk (VaR)

A portfolio has a value of 5,000,000 USD. The daily portfolio volatility is 1.6%. …

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Applied Math
★★★ ★★

Put–Call Parity (European Options)

The price of a European call option is 12 USD. The stock price is …

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Applied Math
★★★ ★★

Shannon Entropy

A discrete stochastic process produces four possible states with probabilities $P(X) = \{\frac{1}{2}, \frac{1}{4}, …

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Applied Math
★★★★ ★

Bullet Volume

Find the exact total volume: A cylinder ($r=3, h=6$) capped with a nose defined …

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Applied Math
★★★★ ★

Critical Damping

A mechanical oscillator consists of a mass $m = 5$ kg and a spring …

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Applied Math
★★★★ ★

Relativistic Momentum

A particle with rest mass $m_0$ travels at a velocity of $v = \frac{\sqrt{3}}{2}c$, …

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Applied Math
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Brachistochrone Time

A bead slides frictionlessly under gravity $g$ down a cycloid curve defined parametrically by …

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Applied Math
★★★★★

Navier-Stokes Poiseuille Flow

In a fully developed, steady laminar pipe flow (Hagen-Poiseuille), the radial velocity profile is …

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