The point P P\,P lies on the curve with equation
y=4e2x+1. y = 4e^{2x+1}. y=4e2x+1.The yyy-coordinate of P P\,P is 8.
Find, in terms of ln2\ln 2ln2, the xxx-coordinate of PPP.
Find the equation of the tangent to the curve at the point P P\,P in the form y=ax+by = ax + by=ax+b, where a a\,a and b b\,b are exact constants to be found.
Practise Edexcel A Level Old Maths Logs with exam-style questions for A Level Old Maths. 16 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.