Continuity and Differentiability — Important Questions
ICSE · Class 12 · Mathematics
105 important questions from Continuity and Differentiability for ICSE Class 12 Mathematics, with answers. Includes MCQ and multiple choice questions.
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Important Questions from Continuity and Differentiability
The value of lim_{x→0}(sin x / x) is:
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B
lim_{x→0}(sin x / x) = 1 is a standard limit. This is Theorem 8.1(i).
The value of lim_{x→0}(eˣ − 1) / x is:
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C
lim_{x→0}(eˣ−1)/x = 1 is a standard exponential limit (Theorem 8.1(iii)).
lim_{x→0}(tan x / x) equals:
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A
lim_{x→0}(tan x/x) = 1. Since tan x = sin x/cos x and cos x→1 as x→0.
A function f is continuous at x = c if:
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B
The complete definition: f is continuous at c if lim_{x→c}f(x) = f(c), which requires f(c) defined, limit exists, and limit = f(c).
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