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NCERT Solutions For Class 12 Maths Chapter 7 Integrals Ex 7.8

Here, Below you all know about NCERT Solutions for Class 12 Maths Chapter 7 Integrals Ex 7.8 Question Answer. I know many of you confuse about finding Chapter 7 Integrals Ex 7.8 Of Class 12 NCERT Solutions. So, Read the full post below and get your solutions.

TextbookNCERT
BoardCBSE
CategoryNCERT Solutions
ClassClass 12
SubjectMaths
ChapterChapter 7
ExerciseClass 12 Maths Chapter 7 Integrals Exercise 7.8
Number of Questions Solved6
NCERT Solutions For Class 12 Maths Chapter 7 Integrals Ex 7.8

NCERT Solutions for Class 12 Maths Chapter 7 Integrals Ex 7.8

NCERT TEXTBOOK EXERCISES

Ex 7.8 Class 12 Maths Question 1.
$\int _{ a }^{ b }{ x\quad dx }$

Solution:

on comparing
$\int { a }^{ b }{ x\quad dx } \quad with\quad \int { a }^{ b }{ f(x)dx }$
we have

Ex 7.8 Class 12 Maths Question 2.
$\int _{ 0 }^{ 5 }{ (x+1)dx }$

Solution:

on comparing
$\int { 0 }^{ 5 }{ (x+1)dx } \quad with\quad \int { 0 }^{ 5 }{ f(x)dx }$
we have f(x) = x+1, a = 0, b = 5
and nh = b-a = 5-0 = 5

Ex 7.8 Class 12 Maths Question 3.
$\int _{ 2 }^{ 3 }{ { x }^{ 2 } } dx$

Solution:

compare
$\int { 2 }^{ 3 }{ { x }^{ 2 } } dx\quad with\quad \int { a }^{ b }{ f({ x }) } dx$
we have

Ex 7.8 Class 12 Maths Question 4.
$\int _{ 1 }^{ 4 }{ ({ x }^{ 2 }-x) } dx$

Solution:

compare
$\int { 1 }^{ 4 }{ ({ x }^{ 2 }-x) } dx\quad with\quad \int { a }^{ b }{ f({ x }) } dx$
we have f(x) = x²-x and a = 1, b = 4

Ex 7.8 Class 12 Maths Question 5.
$\int _{ -1 }^{ 1 }{ { e }^{ x } } dx\quad$

Solution:

compare
$\int { -1 }^{ 1 }{ { e }^{ x } } dx\quad with\quad \int { a }^{ b }{ f({ x }) } dx$
we have

Ex 7.8 Class 12 Maths Question 6.
$\int _{ 0 }^{ 4 }{ { (x+e }^{ 2x }) } dx\quad$

Solution:

let f(x) = x + e2x,
a = 0, b = 4
and nh = b – a = 4 – 0 = 4

NCERT Solutions for Class 12 Maths Chapter 7 Integrals Exercise 7.8 PDF

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