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प्रश्न
Examine the continuity of f(x) = x3 + 2x2 − x − 2 at x = –2.
उत्तर
f(x) = x3 + 2x2 − x − 2
Here f(x) is a polynomial function and hence
it is continuous for all x ∈ R.
∴ f(x) is continuous at x = −2
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