2x - 1, x<1 x2, x > 1 1. Given the function f(x) = Which of the following statements is/are true? A. f is continuous and differentiable for all x. B. f is continuous but not differentiable at x = 1. C. f'(x) = 2 for all x. D. f'(x) = 2x for all x. %3D

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.5: The Kernel And Range Of A Linear Transformation
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1. Given the function f (x) = {2x – 1, x< 1
x², x > 1
Which of the following statements is/are true?
A. f is continuous and differentiable for all x.
B. f is continuous but not differentiable at x = 1.
C. f'(x) = 2 for all x.
D. f'(x) = 2x for all x.
Transcribed Image Text:1. Given the function f (x) = {2x – 1, x< 1 x², x > 1 Which of the following statements is/are true? A. f is continuous and differentiable for all x. B. f is continuous but not differentiable at x = 1. C. f'(x) = 2 for all x. D. f'(x) = 2x for all x.
Expert Solution
Step 1

Continuous function:-

A Function f(x) is said to be continuous when the left-hand limit, right-hand limit and the value at that point are same.

limxa+f(x)=limxa-f(x)=f(a)

Differentiability:-

The function is differentiable at point 'a' when

limxa+f'(x)=limxa-f'(x)

 

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