Math Problem Statement
the graphs of the functions f(x) and g(x) are given in blue and red, respectively. suppose that u(x)=f(x)g(x) and v(x)=f(x)/g(x). find each of the following: u'(1) and v'(1).
Solution
Let's analyze the graphs of the two functions (blue) and (red) to find the values of and .
Given:
We need to use the product rule for and the quotient rule for at .
1. Find :
Using the product rule: We will need , , , and .
2. Find :
Using the quotient rule:
Step 1: Derivatives and Function Values at
From the graph:
- (since the blue graph passes through ).
- (since the red graph also passes through ).
Slopes:
- is the slope of the blue line at , which is approximately (from to ).
- is the slope of the red line at , which appears to be around (based on the nearby points and ).
Step 2: Compute
Substituting into the product rule:
Step 3: Compute
Substituting into the quotient rule: This expression is undefined because of division by zero. Therefore, is undefined.
Final Answer:
- is undefined due to division by zero.
Would you like more details or further explanation?
Here are 5 related questions for further exploration:
- How is the product rule derived for differentiating products of functions?
- Why does the quotient rule involve the square of the denominator in its formula?
- What happens graphically when a function has a derivative of 0 at a certain point?
- What is the significance of slopes (derivatives) for functions at given points?
- How do we interpret division by zero in a quotient of functions?
Tip: Always check for points where a function or its derivative might be undefined, especially in cases involving division.
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Math Problem Analysis
Mathematical Concepts
Calculus
Differentiation
Product Rule
Quotient Rule
Formulas
u(x) = f(x) * g(x)
v(x) = f(x) / g(x)
Product Rule: u'(x) = f'(x) * g(x) + f(x) * g'(x)
Quotient Rule: v'(x) = [f'(x) * g(x) - f(x) * g'(x)] / g(x)^2
Theorems
Product Rule
Quotient Rule
Suitable Grade Level
Grades 11-12
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