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# Partial Derivatives And Euler's Equation MCQ Level - 2

## 10 Questions MCQ Test Topic wise Tests for IIT JAM Physics | Partial Derivatives And Euler's Equation MCQ Level - 2

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This mock test of Partial Derivatives And Euler's Equation MCQ Level - 2 for Physics helps you for every Physics entrance exam. This contains 10 Multiple Choice Questions for Physics Partial Derivatives And Euler's Equation MCQ Level - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Partial Derivatives And Euler's Equation MCQ Level - 2 quiz give you a good mix of easy questions and tough questions. Physics students definitely take this Partial Derivatives And Euler's Equation MCQ Level - 2 exercise for a better result in the exam. You can find other Partial Derivatives And Euler's Equation MCQ Level - 2 extra questions, long questions & short questions for Physics on EduRev as well by searching above.
QUESTION: 1

Solution:
QUESTION: 2

### then the value of is equal to

Solution:

We have  v is homogeneous function of degree n then The correct answer is: n(n - 1)

QUESTION: 3

### The accompanying figure shows the graph of an unspecified function of f(x, y) and partial derivatives fx(x, y) and fy(x, y). Determine which is which and explain. Solution:

The correct answer is: II - f(xy),  I - fx(x, y), III - fy(x, y)

QUESTION: 4 Solution:

We are given  f(u) is homogeneous function degree 1, then    [By dividing with cos3 u] The correct answer is: QUESTION: 5

If u = f(t) and v = f(t) and  t = φ (x, y)  then

Solution:  The correct answer is: QUESTION: 6

If w = f(u, v) where u = x + y and v = x – y then Solution:

We have w = f(u, v)  The correct answer is: QUESTION: 7

If f is differentiable and z = u + f(u2v2), then

Solution:

Let w = u2v2
then z = f(w) + u So, The correct answer is: QUESTION: 8

If then the value of is

Solution: f(u) is homogeneous function of degree 2 Now, let g(u) = 2tan u The correct answer is: 2tan u(2sec2u –1)

QUESTION: 9

If f(x, y, z) = 0 then the value of equal to

Solution:

(1) Differentiate with respect to y, I get:

0+F2+F3∂z/∂y=0

So

F3 ∂z/∂y = −F2

(2) Differentiate with respect to x, I get:

F1 + F2 ∂y/∂x + 0 = 0

So F2 ∂y/∂x = −F1

(3) Differentiate with respect to z, I get:

F1 ∂x/∂z +0 + F3 = 0

4) After some manipulations with the Fi, I get to the conclusion that

∂z/∂y∗∂y/∂x∗∂x/∂z=−1, so when evaluated with x, z, y respectively, conclusion is still true

QUESTION: 10

Use the information the figure to find the first order partial derivatives of f at the point (1, 2) Solution:

The correct answer is: 