Logarithmic Rules

log_b(M+N)=log_bM+log_bN

• False: It's supposed to be log_bM*log_bN

• True

• False: It's supposed to be log(M+N)/logb

• False: It's supposed to be log_b(MN)

log₂31=

• ln2/ln31

• ln(2/31)

• ln31/ln2

• ln(31/2)

To find log₂9 you would....

• Set 2 as your base and break your head trying to find what power will make it 9

• Simply put log9/log2 in your calculator

• Simply put ln2/ln9 into your calculator

• Simply put log(9/2) into your calculator

log₃3x-log₃x=

• 1

• 3

• 0

• log₃x

• A
• B
• C
• D

Solve: log_e x² = log_e 25

• {5}

• {-5, 5}

• {-5}

• undefined

Solve: log₃ 2x² = log₃ (7x - 3)

Find the solution(s).

Enter your answer as a set, include a comma if necessary.

example if x = 0 and x = 2, then {0,2}

log₂ 16x = 6

• x = 3

• x = 2

• x = 6

• x = 4

• A
• B
• C
• D

log₆(2x + 3) = 3

• x = 106.5

• x = 100

• x = 16

• x = 50

Tags

CCSS.HSF.BF.B.5