Further Modelling with Functions (AQA A-Level Mathematics): Flashcards

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Further Modelling with Functions
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What are piecewise functions used for?

Modelling situations with different functions over different intervals

Exponential growth formula

P(t)=P0ertP(t) = P_0 \cdot e^{rt}

What do exponential functions model?

Growth/decay at a rate proportional to current value

What scenarios use quadratic modelling?

Acceleration, projectile motion, any relationship with squared terms

Height function for projectile motion

h(t)=h0+v0t12gt2h(t) = h_0 + v_0t - \frac{1}{2}gt^2

What does logarithmic modelling describe?

Situations where growth slows down over time

pH formula

pH=log[H+]pH = -\log[H^+]

Profit function formula

P(x)=R(x)C(x)P(x) = R(x) - C(x)

Method to maximize profit

Differentiate profit function and set to zero

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