89 Answered Questions for the topic Logarithmic functions

09/21/18

#### evaluate the following in terms of x and y

If log p=x and log q=y, evaluate the following in terms of x and y:
#1) (log p^-4)/(loq q^-5) = ?
#2) (log p^5)^−3 = ?

08/06/18

#### Question about rewriting to log form

K(t) = 50 · 0.65t
This formula can be rewritten in a form t = A log (K) + B
Do this to find the values for A and B
Could someone please help me with this one?
Thank you.

08/06/18

#### Transforming logarithmic functions

B=5·82t into t=1/2 · log8 (1/5 B)
I need an explanation how to solve this step by step, so I can better understand how to tackle problems which are similar.
Thank you!

Logarithmic Functions

06/25/18

#### If x^2 + y^2 =23xy, prove that log {(x+y)/5} = (1/2) (log x + log y)

if x2+y2 = 23xy, prove that log (x+y)/5 = (1/2) log x + log y

06/25/18

#### FInd the 1000th derivative of Ln(x+1)

I am struggling as i know the sequence but got no idea how to describe it mathematically!

Logarithmic Functions

06/25/18

#### If y= (m^3×n^4)/(16p^2 ) then prove that 3 log m + 4 log n = 4 log 2 + 2 log p + log y

Tried many ways still could not solve pl help fast

Logarithmic Functions

04/11/18

#### a forest fire spreads continuously at a burning 10% more acres an hour. how long will it take for 1000 acres to be on fire after 200 acres are burning

this is a logarithmic function

Logarithmic Functions

03/19/18

#### logarithmic

you start a savings account with $1000. This account earns 0.45% per month. When will this account reach $1124?

02/11/18

#### Application of exponential and logarithmic functions

Bacteria growing in a petri dish double every 30 minutes. If the sample has 10 bacteria in the dish initially,(a) write a function to describe the population at time t. Also,(b) find the population...
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02/11/18

#### Application of exponential and logarithmic functions

Bacteria growing in a petri dish quadruple every 2 hours. If the sample has 18 bacteria in the dish initially,(a) write a function to describe the population at time t. Also,(b) find the population...
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12/12/17

#### Solve the following

1.find the value of Of each of the following, giving your answer an integerLog64+Log692.Let Log3P=6 and Log3Q=7Find Log3(P/Q) By expanding the logarithm 3.Solve the equations below using exponents...
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12/12/17

#### Find the value of each of the following

solve
82x+1=162x-3
find the value of Of each of the following, giving your answer an integer
Log62-Log612

Logarithmic Functions

12/10/17

#### Let x = ln 3 and y = ln 5. Write the following expressions in terms of x and y

11. Let x = ln 3 and y = ln 5. Write the following expressions in terms of x and y a. ln(5/3)b. ln45

Logarithmic Functions

12/07/17

#### solve the problem.

The logarithmic function h(A)=29+48.8 log(A+1) gives the percent of the adult height a male child A years old has attained. If a boy is 9 years old, what percent go his adult height will he have...
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10/25/17

#### Use the definition of the logarithmic function to find x. (Write in exponential form to solve)

log2 x = 5

10/17/17

#### Use the rules of logarithms to contract the following expression into a single logarithm (if necessary), then solve for x

ln(4)-ln(x)=-0.15

06/24/17

#### Worded indicies problem- Find temperature of liquid

When a liquid is placed into a refrigerator, its temperature T°C at a time t minutes is given by the formula
T=T*10^-kt
The temperature is initially 100°C and drops to 40°C in 5 minutes.
Find...
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Logarithmic Functions

04/27/17

#### Word Problem

The logistical growth function f(t) = 77,000/1 + 1539.0e^-1.3t models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a paticular...
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04/16/17

#### Some logarithms. Falling behind and not really sure how it works completely.

So, in all, I'm really just asking how I would use log in general. (Please answer in a 'for dummies' format please! :) Not exactly the best with the vocabulary!) Due to some research, I've learned...
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03/09/17

#### A pie cools in a 70 degree room. The pie is 300 degrees. After ten minuites the pie cools to 260 degrees

Create a formula then find the temp of the pie after 120 minuites

Logarithmic Functions

02/12/17

#### A 50g sample of radioactive substance is said to have a half life of 18days, How many grams are remaining after each day? ( totally of days)

what would the exponential regression question be that models the number of grams remaining? y, after x number of days

Logarithmic Functions

02/11/17

#### A 50g sample of radioactive substance is said to have a half life of 18days, How many grams are remaining after each day? ( totally of days)

For every half life how many # of days and grams remaining?

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