Two exponential functions are given: and .

MATHEMATICS · Multi-part · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms

Problem

Two exponential functions are given: p(x)=3xp(x)=3^{x} and q(x)=3x+5q(x)=3^{x}+5. (i) Find the domain and range of p(x)p(x). (ii) Find the domain and range of q(x)q(x). (iii) Explain clearly why the two domains are identical but the two ranges differ, linking your explanation to the effect of vertical translation on the graph.

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