Know and use the function eˣ and its graph; know and use the definition of log_a x as the inverse of aˣ, where a is positive and a ≠ 1; know and use the function ln x and its graph; know and use ln x as the inverse function of eˣ(Pearson Edexcel A-Level)

Mastery Mind: Mathematics Revision · Oct 20, 2026 · 5m

Exponentials and natural logarithms form an inverse pair: one builds a result with a power and the other retrieves that power. In Pearson Edexcel A-Level Mathematics, this topic rewards candidates who can sketch the two linked graphs accurately, select the correct inverse operation, and show fully justified exact working. Listen to this audio revision guide for Know and use the function eˣ and its graph; know and use the definition of log_a x as the inverse of aˣ, where a is positive and a ≠ 1; know and use the function ln x and its graph; know and use ln x as the inverse function of eˣ. Test…