Logarithms RS Aggarwal ICSE Class-9th Maths Goyal Brothers Prakashan
Logarithms RS Aggarwal ICSE Class-9th Maths Solutions Goyal Brothers Prakashan Chapter-7. We provide step by step Solutions of Exercise / lesson-7 Logarithms for ICSE Class-9 RS Aggarwal Mathematics .
Our Solutions contain all type Questions with Exe-7 A, Exe-7 B with Questions to develop skill and confidence. Visit official Website CISCE for detail information about ICSE Board Class-9 Mathematics.
Logarithms RS Aggarwal ICSE Class-9th Maths Solutions Goyal Brothers Prakashan Chapter-7
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Introduction
Logarithms are the opposite phenomena of exponential like subtraction is the inverse of addition process, and division is the opposite phenomena of multiplication. Logs “undo” exponential.
There are a number of rules known as the laws of logarithms. These allow expressions involving
logarithms to be rewritten in a variety of different ways. The laws apply to logarithms of any base
but the same base must be used throughout a calculation
First Law
log A + log B = log AB
Second Law
log A − log B = log (A/B)
Third Law log An = n log A
log 1 = 0, logmM = 1
Exercise- 7 A Logarithms RS Aggarwal ICSE Class-9th Maths Solutions Goyal Brothers Prakashan
Question 1
convert each of the following into logarithm form
…………………………..
Answer
Question 2
convert each of the following into exponential form
Answer
Question 3
by converting into exponential form find value of each of following
Answer
Question 4
find value of x when
…………………………….
Answer
Question 5
if log…………. ……….show that…………….
Answer
Question 6
given log….. ………… =b
……………….
………………..
……………….. term of x and y
Answer
RS Aggarwal ICSE Class-9th Maths Solutions Goyal Brothers Prakashan Exrcise- 7 B Logarithms
Question 1
evaluate the following without using tables
…………..
…………
……………
…………….
…………….
Answer
Question 2
evaluate
………………………..
Answer
Question 3 and Question 4
3- express …………………….
Answer
Question 5
express ………………….as a single logarithms
Answer
Question 6
evaluate the following without using log tables
………….
……………..
…………….
…………
Answer
Question 7
given ……………..find value of
…………………..
……………………
…………………….
……………………
Answer
Question 8
if log 2 = 0.3010 find the value of ……………..
Answer
Question 9 to Question 11
if log 8 = 0.9010 find the value of
……………..
…………….
………………
Answer
Question 12
if log (m+n) = log m+log n show that ……………..
………………….
Answer
Question 13
solve for x
Answer
Question 14
if …………………find the value of n
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Question 15
write the logarithmic equations for
………………..
………………….
Answer
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