Math 3 The students were given 3 review sheets on tuesday for the test that will be given on Thursday, December 8. topics to include graphing log functions, finding inverse of the log and exponential functions, using the properties of logs to condense, expand and to solve log and exponential equations.
We are looking at the properties of logs, inverse, product, quotient, power, and change of base. Problems consist of expanding, condensing, solving exponential equations and log equations.
Standards for Math 3 Logarithmic functions and exponential functions
MM3A2
Students will explore logarithmic functions as inverses of exponential functions.
Element: MM3A2.a.
Define and understand the properties of n^th roots.
Element: MM3A2.b.
Extend properties of exponents to include rational exponents.
Element: MM3A2.c.
Define logarithmic functions as inverses of exponential functions.
Element: MM3A2.d.
Understand and use properties of logarithms by extending laws of exponents.
Element: MM3A2.e.
Investigate and explain characteristics of exponential and logarithmic functions including domain and range, asymptotes, zeros, intercepts, intervals of increase and decrease, and rate of change.
Element: MM3A2.f.
Graph functions as transformations of f(x) = a^x, f(x) = loga(x), f(x) = e^x, f(x) = ln x.
Element: MM3A2.g.
Explore real phenomena related to exponential and logarithmic functions including half-life and doubling time.
Element: MM3A3.b.
Solve polynomial, exponential, and logarithmic equations analytically, graphically, and using appropriate technology.
Calculus: Continue with related rate problems. Students were given 12 related rate problems on Tuesday. Students on Monday were given 9 more related rate problems with solutions. Test will be given on Thursday, NO additional homework for the test.
Standards:
M.CALC.1.9 Optimization Problems
The learner will be able to apply derivative; solve optimization and related rate of changes problems.
Essential Question
How do you identify and solve related rate problems?
Steps to follow:
1 Understand the problem
- Identify the variables and rate of change you want and rate of change of what you know.
- . Develop a mathematical model of the problem
- Draw a picture
- Label all parts (known, unknown, constant and variables)
- Write an equation
- This equation could be a formula or one you had to derive
- Differentiate both sides
- Substitute values at this time
- Interpret the solution
Examples:
- You have a hot air balloon it is rising vertically and is being tracked by a range finder that is 500 feet from the point of liftoff. When the range finder is at an angle of π/4 the angle is increasing at the rate of 0.14 radians per minute. How fast is the balloon rising at that moment?
A police cruiser, approaching a right angled intersection from the north is chasing a speeding car that has turned the corner and is now moving straight east. When the cruiser is 0.6 miles north of the intersection and the car is 0.8 miles to the east, the police determine with radar that the distance between them and the car is increasing at 20 mph. If the cruise is moving at 60 mph at the instant of measurement, what is the speed of the other car?
Water runs into a conical tank at the rate of 9 cubic feet per minute. The tank stands point down and has a height of 10 feet and a base radius of 5 feet. How fast is the water level rising when the water is 6 feet deep?