Sunday, January 31, 2021

A Bounded Area (def Int) with log base 4 (5.5 p359 #81)

 A Bounded Area (def Int) with log base 4 (5.5 p359 #81)


This one has u substitution a a conversion from base 4 to bas e, confirming with the TI-84

An Indefinite Integral with Exponents (5.5 p 359 #76)

 An Indefinite Integral with Exponents (5.5 p 359 #76)



This includes u-substitution, and an exponential function in base 2

Derivative of a Log in base 2 (5.5 p358 #55)

 Derivative of a Log in base 2 (5.5 p358 #55)




Proving an old Compounded Interest Formula with L'Hôpital's Rule (5.6 p371 #90)

 


Proving an old Compounded Interest Formula with L'Hôpital's Rule (5.6 p371 #90)

We demonstrate the ln technique as well as makeing a product into a ratio so you can use L'Hôpital's Rule.  

Implicit Diff with arctan (5.7 p 380 #71)

 Implicit Diff with arctan (5.7 p 380 #71)




Here we find a tangent line of a function using implicit differentiation, the product rule, the chain rule, and some careful algebra.

Derivatives of Inverse Functions on the TI-84 (5.3 p 340 #71)

 Derivatives of Inverse Functions on the TI-84 (5.3 p 340 #71)



The Derivative of an Inverse Function (5.3 p340 #67)

 The Derivative of an Inverse Function (5.3 p340 #67)



The derivative of a inverse function is the reciprocal of the derivative of the inverse function.  Be mindful of the exchange of values (x,y) to (y,x) with inverse functions

Intersections of Polar Curves (10.5 p 735 #29)

 Intersections of Polar Curves (10.5 p 735 #29)




Monday, January 11, 2021

A Tangent Line Confirmed with the TI-84 (5-1 p322 #69)

 A Tangent Line Confirmed with the TI-84 (5-1 p322 #69)



We confirm our result with the (DRAW)(5:Tangent) feature on the TI-84


Taking the Derivative of a Log Function (5-1 p322 #55)

 Taking the Derivative of a Log Function (5-1 p322 #55)



We use the quotient rule together in this example.

U-substitution with a Definite Integral (4-R p310 #67)

 U-substitution with a Definite Integral (4-R p310 #67)


When you use u-substitution with a definite integral, you don't have to switch back to make an expression in terms of x.  Since any definite integral is the signed area, it is just a number.  After finding the anti-derivative in terms of you, the FTC can be used to arrive at the answer. 

Using the u-substitution Technique with an Indefinite Integral (4-R p301 #59)

 Using the u-substitution Technique with an Indefinite Integral (4-R p301 #59)



A basic example of how to integrate something that looks like a product, where one factor has something in common with the derivative of the other factor.

Basic Use of the First Fundamental Theorem (4-R p 310 #41)

 Basic Use of the First Fundamental Theorem (4-R p 310 #41)


Here we use the First Fundamental Theorem of Calculus to evaluate a definite integral, and we will check our work with a TI-84 calculator,

Riemann Sums to Estimate an Integral (4-R p 309 #25)

 Riemann Sums to Estimate an Integral (4-R p 309 #25)



Here we use left and right Riemann sums to get the upeer and lower bounds on an integral. We can then use the TI-84 to check our work.

Sunday, January 10, 2021

Mean Value Theorem for Integrals with the TI-84 (4-5#85)

Mean Value Theorem for Integrals with the TI-84 (4-5#85)



Estimating Average Sales with t he TI-84 and the Mean Value Theorem for Integrals (4-5#85)

Summer Topic: Domains

Not all functions can take any number. The set of numbers that the function can accept is called a domain.  Here we review how to analyze a ...