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Which of the following functions is not differenti
able in the domain [-1,1]?
a)f(x) =
Maximum (x,-x) 
b)f(x) = x-1
c)f(x) = 2
d)f(x) = 
x2
Correct answer is option 'A'. Can you explain this answer?
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Which of the following functions is not differenti... moreable in the ...
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Which of the following functions is not differenti... moreable in the ...
Explanation:
- f(x) = Maximum (x,-x)
This function is not differentiable in the domain [-1,1] because it has a sharp corner or cusp at x = 0. The function is defined as the maximum of x and -x, which results in a V-shaped graph with a sharp point at x = 0. At this point, the function is not smooth and the derivative does not exist.
- Definition of Differentiability
A function is differentiable at a point if it has a well-defined derivative at that point. The derivative represents the rate of change of the function at that point. In the case of a sharp corner or cusp, the derivative does not exist because the function is not smooth at that point.
- Differentiability of Other Functions
b) f(x) = x-1
This function is differentiable everywhere, including the domain [-1,1], as it is a linear function with a constant slope.
c) f(x) = 2
This function is a constant function and is differentiable everywhere, including the domain [-1,1], as the rate of change is zero at every point.
d) f(x) = x^2
This function is differentiable everywhere, including the domain [-1,1], as it is a smooth curve without any sharp corners or cusps.
- Conclusion
In summary, the function f(x) = Maximum (x,-x) is not differentiable in the domain [-1,1] due to the presence of a sharp corner or cusp at x = 0. This function does not have a well-defined derivative at that point, unlike the other functions mentioned.
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Which of the following functions is not differenti... moreable in the ...
Correct answer should be 'd'. I think you all know why.
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Which of the following functions is not differenti... moreable in the domain [-1,1]?a)f(x) =Maximum (x,-x)b)f(x) = x-1c)f(x) = 2d)f(x) =x2Correct answer is option 'A'. Can you explain this answer?
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