Derivative of f(x), g(x) and h(x) from Calculus Problem A.1: Solve Urgent"

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SUMMARY

The discussion focuses on finding the derivative λ0(x) of the function λ(x) = f(x) · g(x) + f(x) · h(x) − g(x) · h(x) using calculus rules. The participants apply the sum rule and product rule for differentiation, leading to the expression f'g + fg' + f'h + fh' - g'h - gh'. It is established that f' and h' equal 1, while g(x) is identified as a semi-circle with specific endpoints. The lengths and properties of the line segments and semi-circle are also discussed to clarify the functions involved.

PREREQUISITES
  • Understanding of calculus differentiation rules, specifically the sum rule and product rule.
  • Familiarity with functions and their derivatives, particularly linear and semi-circular functions.
  • Knowledge of how to analyze geometric properties of line segments and circles.
  • Basic algebra skills to manipulate and simplify expressions involving functions.
NEXT STEPS
  • Study the application of the product rule in calculus with examples.
  • Explore the properties of semi-circular functions and their derivatives.
  • Learn how to derive the lengths of line segments and arcs in geometry.
  • Practice solving similar derivative problems involving multiple functions.
USEFUL FOR

Students and educators in calculus, mathematicians interested in derivative applications, and anyone looking to enhance their understanding of function differentiation.

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Please also solve this :

Let f(x), g(x) and h(x) be the functions from Problem A.1. Find the derivative λ0(x) of the following function with respect to x:

λ(x) = f(x) · g(x) + f(x) · h(x) − g(x) · h(x)Note: here problem A.1 is the upper problem.Please solve both the problem.
 
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Beer induced query follows.
sfvdsc said:
View attachment 11486

Please also solve this :

Let f(x), g(x) and h(x) be the functions from Problem A.1. Find the derivative λ0(x) of the following function with respect to x:

λ(x) = f(x) · g(x) + f(x) · h(x) − g(x) · h(x)Note: here problem A.1 is the upper problem.Please solve both the problem.
What have you done so far?
 
That's a pretty straight forward problem. Using the "sum rule", that (f+ g)'= f'+ g', and the "product rule", that (fg)'= f'g+ fg' the derivative of fg+ fh- gh is f'g+ fg'+ f'h+ fh'- g'h- gh'.

You should see immediately that f'= h'= 1. What is g'?
 
f(x)= x- 2. That line segment starts at (2, 0) and ends at (4, 2). What is the length of that line segment?

h(x)= x- 6. That line segment starts at (8, 2) and ends at (10, 6). What is the length of that line segment?

g(x) is a semi-circle with end points (4, 2) and (8, 2). What is its radius? What is its circumference?
 
Since when is a semicircle a line segment?
 
For this problem it was an honorary line segment!
 

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