RBSE Solutions for Class 12 Maths Chapter 7 Differentiation Ex 7.3

RBSE Solutions for Class 12 Maths Chapter 7 Differentiation Ex 7.3

Rajasthan Board RBSE Class 12 Maths Chapter 7 Differentiation Ex 7.3

Find dydx of following functions :

RBSE Solutions For Class 12 Maths Chapter 7 Question 1.
(i) 2x + 3y = sin y
(ii) x² + xy + y² = 200
Solution:
(i) 2x + 3y- sin y
Diff. w.r.t. x on both sides,

(ii) x2 + xy + y2 = 200
Diff. w.r.t. x on both sides,

RBSE Solutions For Class 12 Maths Chapter 7.3 Question 2.
(i) √x + √y = √a
(ii) tan (x + y) + tan (x – y) = 4
Solution:
(i) √x + √y = √a
DifF. w.r.t. x on both sides,

(ii) tan (x + y) + tan (x – y) = 4
DifF. w.r.t. x on both sides,

Exercise 7.3 Class 12 Maths RBSE Question 3.
(i) sin x + 2 cos² y + xy = 0
(ii)x √y + y√x = 1
Solution:
(i) sin x + 2 cos² y + xy = 0
DifF. w.r.t. x on both sides,

(ii) x√y + y√x = 1
DifF. w.r.t. x on both sides,

RBSE Class 12 Maths Chapter 7 Question 4.
(i) (x² + y²)² = xy
(ii) sin (xy) + x/y = x² – y
Solution:
(i) (x² + y²) = xy
Diff. w.r.t. x on both sides,

(ii) sin (xy) + x/y = x² – y
Diff. w.r.t. x on both sides,

RBSE Solution Class 12 Maths Chapter 7 Question 5.
(i) x³ + y³ = 3axy
(ii) x^y + y^x = ab
Solution:
(i) x³ + y³ = 3axy
DifF. w.r.t. x on both sides,

(ii) x^y + y^x = ab
Solution :
Let u = x^y and v = y^x
Then, u + v = a^b
Again, u = x^y and v = y^x
Taking log on both sides,
log u = y log x and log v = x log y
DifF. w.r.t. x,

RBSE Class 12 Math Chapter 7 Question 6.
(i) y = x^y
(ii) x^a . y^b = (x – y)^a+b
Solution:
(i) y = x^y
Taking log on both sides,
log y = log x^y = y log x
Diff. w.r.t. x on both sides,

RBSE Solutions For Class 12 Maths Chapter 7 Miscellaneous Question 7.

Solution:

RBSE Class 12 Maths Chapter 7.3 Question 8.

Solution:

RBSE Solutions For Class 12 Maths Chapter 7.3 Question 9.

Solution:

7.3 Class 12 Question 10.

Solution:

SabDekho

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