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Warm Up: Simplify the Expression. Then State briefly how to simplify the exponents. 1. 2. 3.
4-5 Properties of Logarithms
Ex 1: Condense the Expression a. b. Remember that Multiplication and Addition go hand-in-hand. We must have the same base to condense!!! ln is in base e. Division and Subtraction go hand-in-hand.
Ex 3: Condense the Expression Here, the distributive law can be used.
Let’s Put it all together… Ex 4&5: Condense the expression.
We can Also go Backwards! We can also “un-distribute” the exponent Ex6: Expand the expression.
We can Also go Backwards!! Ex 6&7: Expand the expression.
Ex 7: Use log 3 ≈.477 and log 2 ≈.301 to approximate the value of the expression
The Change of Base Formula Let u, b, and c be positive numbers with b≠1 and c≠1. Then: More specifically:
Ex 8: Use the change of base formula to evaluate the expression
Ex 1: Use properties of logarithms to evaluate the expression = ? a. b.
Properties of Logarithms Section 8.5. WHAT YOU WILL LEARN: 1.How to use the properties of logarithms to simplify and evaluate expressions.
Laws (Properties) of Logarithms
Expanding and Condensing Logarithms Product Property.
EXPANDING AND CONDENSING LOGARITHMS PROPERTIES OF LOGARITHMS Product Property: Quotient Property: Power Property: PROPERTIES OF LOGARITHMS.
3.3 Properties of Logarithms Change of base formula log a x =or.
8.5 Properties of logarithms
Section 5.3 Properties of Logarithms Advanced Algebra.
Section 5.6 Laws of Logarithms (Day 1)
Properties of Logarithms. The Product Rule Let b, M, and N be positive real numbers with b 1. log b (MN) = log b M + log b N The logarithm of a product.
10.5 Properties of Logarithms. Remember…
8d - Properties of Logarithms. Product Property Here is the product property: Using this form, expand the following: In order to simplify, use the product.
Logarithms of Products
Logarithm Jeopardy The number e Expand/ Condense LogarithmsSolving More Solving FINAL.
Exponential Function An exponential function with base b and exponent x is defined by Ex. Domain: All reals Range: y > 0 (0,1) x y.
Properties of Logarithms
WARM - UP Evaluate: log 3 81 Solve for x: log5 (2x+3) = log5 (4x -3)
4.5 Apply Properties of Logarithms p. 259 What are the three properties of logs? How do you expand a log? Why? How do you condense a log?
7.5 NOTES – APPLY PROPERTIES OF LOGS. Condensed formExpanded form Product Property Quotient Property Power Property.
Unit 11: Logarithms, day 3 3 properties to Expand and Condense Logarithmic Expressions.
Warm-Up 1) Use log 3 5 = and log 3 6 = to approximate log ) Condense 7 log log 4 x + 3 log 4 y.
Laws of Logarithms 5.6. Laws of Logarithms O If M and N are positive real numbers and b is a positive number such that b 1, then O 1. log b MN = log.
Honors Algebra 21 Properties of Logarithms During this lesson, you will: Expand the logarithm of a product, quotient, or power Simplify (condense)
8.4 – Properties of Logarithms. Properties of Logarithms There are four basic properties of logarithms that we will be working with. For every case, the.
Notes Over 8.5 Properties of Logarithms Product Property Quotient Property Power Property.
8-4 Properties of Logarithms Use the change of base formula to rewrite and evaluate logs Use properties of logs to evaluate or rewrite log expressions.
LAWS OF LOGARITHMS SECTION 5.6. Why do we need the Laws? To condense and expand logarithms: To Simplify!
5.3 Properties of Logarithms
Explain the log 1 = ? Don’t forget that…… Algebra 2: Section 8.5 Properties of Logarithms.
1) Write in exponential form. log 27 9 = x 3) Evaluate. Warm-Up 2) Write in logarithmic form. 5 x = ) Write the Equation that models this situation:
Logarithmic Properties Exponential Function y = b x Logarithmic Function x = b y y = log b x Exponential Form Logarithmic Form.
3.3 Properties of Logarithms Students will rewrite logarithms with different bases. Students will use properties of logarithms to evaluate or rewrite logarithmic.
Essential Question: How do you use the change of base formula? How do you use the properties of logarithms to expand and condense an expression? Students.
Objective: Students will be able to use properties to simplify logarithmic expressions.
Warm up! Simplify the following 1.Paraphrase the rules for multiplying exponents? 2.What order do the exponents have to be in? 3.x 3 x 7 x x 2 4.3x 3 4x.
Sec 4.3 Laws of Logarithms Objective:
LOGS EQUAL THE The inverse of an exponential function is a logarithmic function. Logarithmic Function x = log a y read: “x equals log base a of y”
Warm Up 2. (3 –2 )(3 5 ) (2 6 )(2 8 ) (7 3 ) Simplify. Write in exponential form. x 0 = 1x 1 = x.
5.5 Evaluating Logarithms 3/6/2013. Properties of Logarithms Let m and n be positive numbers and b ≠ 1, Product Property Quotient Property Power Property.
9.4 Properties of Logarithms. Since a logarithmic function is the inverse of an exponential function, the properties can be derived from the properties.
Section 5.4 – Properties of Logarithms. Simplify:
7-5 PROPERTIES OF LOGARITHMS Rolling them out and Wrapping them up.
Properties of logarithms. Properties of Logarithms Let b, u, and v be positive numbers such that b≠1. Product property: log b uv = log b u + log b v Quotient.
3.3 Day 1 Properties of logarithms –Use the product rule. –Use the quotient rule. –Use the power rule. –Expand logarithmic expressions. Pg. 407 # 2-36.
Start Up Day What is the logarithmic form of 144 = 122?
Log Properties. Because logs are REALLY exponents they have similar properties to exponents. Recall that when we MULTIPLY like bases we ADD the exponents.
Properties of Logarithms 3 properties to Expand and Condense Logarithmic Expressions; 1 formula to Change the Base Monday, February 8, 2016.
Common Logarithms, Base e, Natural Logs, Properties of Logarithms.
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