# Logarithms – Exercise 3.4

## Exercise 3.4

Unit 3 – Logarithms

### This Post Has 32 Comments

1. M.hamza

It’s very easy method to solve question

2. Sulaha

They are good but I have a little confusion in part 5 of Qs no 1 in the ending steps before taking the antilog

1. Sunaina

Log x is negative so when will you take anti log of that number the answer will be in the form power like

(1234 × 10^ any number ) in this form
So to write accurate answer we will subtract the number greather that of characteristic
And when we do something in math we must cancel it too so that’s why subtract and add that number

In ch 4 in completing square questions we do the same thing we add and subtract the number we have added in the question to complete the square

I hope you have got it

nice job

2. Husnain

True

3. Arfan

I think That question is having some mistakes. I am doing only incorrect part. Just check and let me know is it ok for all…?
= 0.0899 + ( -0.1565) – ( -2.1249) – (3.1065)
= 0.0899 – 0.1565 + 2.1249 – 3.1065
= – 1.0482

1. Author

There is no mistake found in it.

1. Ayesha

There is mistake in Q.03 you have write there -q/10(0.6990) but in the second step you wrote -q(0.6996) this is a mistake but I have corrected it in my copy

1. Author

There is no mistake found in it. 10 goes to left and multiply with it.

3. Rabia bint-e-Qaim

It’s good to helping me out in exams .🙂👌

Good mathematics

GOOD MATHEMATICS

6. izza amir

very good helps a lot

7. Qandeel Akmal

Helpful in this #Covid situation veery much thanjs to the author appreciating your work

8. M Junaid

9. arham

nice bro i was just confused by this doneby them

10. AbdulRehman

hey thanks authour your notes are the best and the help me alot

11. Ayesha

there is a mistake in Q NO 03 in last steps please check it.

1. Author

There is no mistake found in it.
Kindly mention the mistake.

12. Epic Mateen

There’s a little mistake in Q1 part vi (6)
log x=-1+1-0.2056
log x=-1+79144 👈 this is wrong step
log x= 1.7944
Next step and answer is correct but that one is mistake
THANKS

1. Author

I’ve corrected the mistake. Thanks for the correction.

13. Riqza Sajid

Gud ….help me a lot

14. Shams uddin

Not at all

15. Hafsa kiran

Great👌🏻☺

16. WS SAIFULLAH

NICE NOTES BUT YOU NEED TO CHANGE THE STYLE OF THE PAGE BECAUSE IT ISN’T GOOD

17. Tooba Shaheen

There is a mistake of the numbers in question no 1 part 8 in last 4 rows.

1. Author

ok, we’ll check it.

18. Jibran Imran Kayani

Bhai ap nai Q1 kay parts kay answers kay steps zyada tar 2 2 times same steps likhay hai jis ki waja say answer bohot long hogia hai. Kindly correct it.

19. James Steward

This website is helpless and enemy of
students. How will students learn to take logarithm of the value in future. They only copy from website and write in their neat registers. What will they do in examinations. Anyways, agar yai website na hoti toh mai ajj fail hota😅😅🤣🤣🤣

20. Haider

There’s a mistake in Q#1 Vii
You didn’t put “Log” in “taking log on both sides”

1. Author

Okay, we’ll check it.

21. Ayesha:)

This website is sooo good