﻿  is continuous at x = 0, find the values of Aand B. Also find f (0). : Kaysons Education

# is Continuous At x = 0, Find The Values Of Aand B. Also Find f (0).

#### Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

#### Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

#### National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

#### Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

#### Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

## Question

### Solution

Correct option is

A = – 2, B = 0, f (0) = –1.

As f(x) is continuous at x = 0,

As denominator → 0 as x  → 0,

Numerator should also → 0 as x → 0

Which is possible only if (for f (0) to be finite).

Again we can see that denominator → 0 as x → 0,

∴ Numerator should also approach 0 as x → 0 (for f(0) to be finite)

So, we get

#### SIMILAR QUESTIONS

Q1

differentiable function in [0, 2], find a and b. (where [.] denotes the greatest integer function).

Q2

Discuss the continuity of the function .

Q3

Let f : → R, such that f’ (0) = 1 and f (x +2y) = f (x) + f (2y) + ex+2y (x + 2y) – x. ex – 2y. e2y + 4xy∀ xy Ïµ R. Find f (x).

Q4

If g(x) is continuous function in [0, ∞) satisfying g(1) = 1. If

.

Q5

Let f is a differentiable function such that

.

Q6

Let f : R+ → R satisfies the functional equation

.

If f’(1) = e, determine f (x).

Q7

Let f is a differentiable function such that

.

Q8

Let f be a function such that  .

.

Q9

Find and b so that the function:

Q10

Find the natural number a for which  where the function f satisfies the relation f (x + y) = f (xf (y) for all natural number xy and further f (1) = 2.