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If y = cos^(-1)(x), then dy/dx is:
If y = cos^(-1)(x), then dy/dx is:
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Practice Questions
1 question
Q1
If y = cos^(-1)(x), then dy/dx is:
-1/√(1-x^2)
1/√(1-x^2)
0
1
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The derivative of cos^(-1)(x) is dy/dx = -1/√(1-x^2).
Questions & Step-by-step Solutions
1 item
Q
Q: If y = cos^(-1)(x), then dy/dx is:
Solution:
The derivative of cos^(-1)(x) is dy/dx = -1/√(1-x^2).
Steps: 4
Show Steps
Step 1: Understand that y = cos^(-1)(x) means y is the angle whose cosine is x.
Step 2: Recall the relationship between the derivative of the inverse cosine function and its derivative formula.
Step 3: The formula for the derivative of cos^(-1)(x) is dy/dx = -1/√(1 - x^2).
Step 4: Recognize that this formula applies for values of x in the range -1 < x < 1, where the square root is defined.
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