Card 1 of 21
How do you solve 2x+1=642^{x+1}=642x+1=64 without using logarithms?
A
- Rewrite 64 as 262^626
- Equate indices: x+1=6x+1=6x+1=6
- x=5x=5x=5
B
In the growth model P=AektP = Ae^{kt}P=Aekt, the population grows if k>0k > 0k>0 and decays if k<0\boxed{k < 0}k<0.
C
y=−4y = -4y=−4
D
f′(x)=ex+2f'(x) = e^{x+2}f′(x)=ex+2
Card 1 of 21
Exponentials and Logarithms Flashcards
21 flashcards on Edexcel A Level Maths Exponentials and Logarithms: the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3.