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What is the range of y=exy=e^xy=ex?

A

The range is y>0y>0y>0.

B

For every real xxx, ln⁡(ex)=x\boxed{\ln(e^x)=x}ln(ex)=x​.

C

Since e0=1e^0=1e0=1, ln⁡1=0\boxed{\ln 1=0}ln1=0​.

D

When x>0x>0x>0, eln⁡x=x\boxed{e^{\ln x}=x}elnx=x​.

Card 1 of 20

1.6.5 Exponentials and logarithms Flashcards

  1. A Level
  2. /Maths
  3. /1.6.5 Exponentials and logarithms

20 flashcards on WJEC A Level Maths 1.6.5 Exponentials and logarithms: the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4.

Flashcards