Doubt from tangents and normals

#1

Question 1 3rd and fourth part

#2

4th one


Solving 3rd one wait

#3

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#4

Isn't there a little short method of question 3 your method is very long ?

#5

See this

#6

Question no 1 first part and is second part question correct i am not getting slope as not defined and question no 13

#7

Exercise 3 2nd and 4th question

#8

2nd one

#9

4th one

#10

Question no 2 why (6,-3) is not acceptable point and why (-6,3) is acceptable point

#11

#12

#13