Solving Log Equations (Log=number)

Presentation

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Mathematics

•

9th - 12th Grade

•

Practice Problem

•

Easy

•

CCSS

HSF.BF.B.5

Standards-aligned

Nakeyta Coleman

Used 13+ times

FREE Resource

9 Slides • 11 Questions

A logarithmic equation is an equation containing a variable in a logarithmic expression.

Una ecuación logarítmica es una ecuación que contiene una variable en una expresión logarítmica

Solving with Logs on ONE Side of =

Resolviendo con Registros en UN Lado de =

Condense logs, if possible (Addition to Multiplication, Subtraction to Division)
Isolate the log term (Add/Subtract, Divide by Coefficient)
Change to Exponential Form
Solve the Remaining Equation

Condense los registros, si es posible (suma a multiplicación, resta a división)

Aísle el término logarítmico (sumar/restar, dividir por coeficiente)

Cambiar a Forma Exponencial

Resuelva la ecuación restante

Another Example

Multiple Choice

log₆(2x + 3) = 3

x = 106.5

x = 100

x = 16

x = 50

Multiple Choice

log₃(x-3) + 10 = 14

-20

Multiple Choice

$\log_3v=4$

Multiple Choice

7log(9x-7)=0

*Hint: undo operations outside log FIRST!

$\frac{9}{8}$

$\frac{8}{9}$

$\frac{7}{9}$

Multiple Choice

log₆(2x + 3) = 3

x = 106.5

x = 100

x = 16

x = 50

Multiple Choice

log₃(x-3) + 10 = 14

-20

Multiple Choice

log₃(x-3) + 10 = 14

-20

Multiple Choice

log₈(4x+4)=2

Multiple Choice

log₂(x + 5) = 3

Multiple Choice

Solve for x. $\log_8\left(x+4\right)=2$

No solution

Multiple Choice

7log(9x-7)=0

*Hint: undo operations outside log FIRST!

$\frac{9}{8}$

$\frac{8}{9}$

$\frac{7}{9}$

A logarithmic equation is an equation containing a variable in a logarithmic expression.

Una ecuación logarítmica es una ecuación que contiene una variable en una expresión logarítmica

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