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# Quiz No. 2

Dear Students!

-- Quiz No. 2 will start from November 30, 2015 12:00 AM. You can take the quiz at any time before 11:59 PM on December 2, 2015.

-- Quiz No. 2 will be from Lecture # 9 to 15.

-- Use Google Chrome only.

-- Take the quiz before the due date.

-- No date will be extended. You have 3 days to attempt the quiz.

-- Any student who would take quiz on last date and fail to take quiz due to LMS problem or the load shedding would not be given the rescheduled quiz. So take quiz as soon as possible before the last date.

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### Replies to This Discussion

Please all students related this subject Share your online Quizzes here to help each other.thanks

Please share the question and their answers of this quiz if anyone has done.
Thanks.

Today Latest Quizz
Shared By a Student.
2 Dec 2015, 10:50pm

1_The mixed 2nd order partial derivatives of z=xy is equal to

xy(sure)

2_ Scalar Triple Product of vectors A=[1,0,0], B=[0,1,0] and C=[0,0,1] is---------
1  (not sure)

3_ The order of differentiation in an nth order partial derivative can be change without affecting the final result whenever the function and all its partial derivatives of order less than or equal to 'n' are ----------.
differentiable (not sure)

4_ Let f(x,y)be a function with continuous second order partial derivatives in some circle centered at a critical point(

x0,y0) and,letD=fxx(x0,y0)fyy(x0,y0)[fxy(x0,y0)]2

IfD=0,then

f(x,y)has a saddle point at (x0,y0). (not sure)

5_ Geometrically the magnitude of Scalar Triple Product gives the------------.
Volume of Parallelepiped (sure)

6_Value of money is an example of -------- quantity
Scalar (sure)

7_ Let f(x,y)be a function with continuous second order partial derivatives in some circle centered at a critical point
(x0,y0) and,letD=fxx(x0,y0)fyy(x0,y0)[fxy(x0,y0)]2 IfD>0andfxx(x0,y0)>0,then
f(x,y)has a saddle point at (x0,y0). (not sure)

8_ Two vectors of magnitudes [4,5] making an angle of 30degree, then the area of parallelogram associated with these two vectors is --------- square units.

9_
For the function z=f(x,y),the totaldifferentialdzis equal to

10_ If the velocity (V1) of a car is 20m/s eastward and velocity (V2) of bike is 40m/s northward then which of the following would be the dot product of these velocities?
-800 (sure)

مَلیکا ایمان 1  thanks for sharing

stay blessed sir.

If two dogs are pulling a bone with force=20Newtons in opposite direction, then the resultant force is———
Select correct option:

1. 40 Newton
2. -40 Newton
3. -20 Newton
4. Zero Newton

### Question

Magnitude of the Force vector: F = -30Newton, is ————.
Select correct option:

1. 30 Newton
2. -30 Newton

### Question

Cross product of equal and opposite non-zero vectors (parallel or anti-parallel) is a——.
Select correct option:

1. Zero vector
2. Zero scalar

### Question

A zero vector has magnitude equal to zero and makes an angle of ———- degree with x-axis.
Select correct option:

1. Arbitrary
2. Only zero
3. 90
4. 180

### Question

The surface:z=f(x,y) neither falls nor rises(decreases or increases) at any point in the ——of Gradient(z).
Select correct option:

1. Direction
2. Opposite to the direction
3. Direction perpendicular to
4. Arbitrary direction

### Question

Length or magnitude of a unit vector is——–.
Select correct option:

1. 0
2. 1 Correct

### Question

Scalar Triple Product of vectors A=[1,0,0], B=[0,1,0] and C=[0,0,1] is———
Select correct option:

1. 3 Correct
2. -1
3. 1
4. 0

### Question

If the velocity (V1) of a car is 20m/s eastward and velocity (V2) of bike is 40m/s northward then which of the following would be the dot product of these velocities?
Select correct option:

1. 800
2. Zero
3. -800
4. 2

### Question

Value of money is an example of ——– quantity
Select correct option:

1. Scalar
2. Vector

### Question

Two vectors of magnitudes [4,5] making an angle of 30degree, then the area of parallelogram associated with these two vectors is ——— square units.
Select correct option:

1. 10*Sqrt(3)
2. 10
3. 20*Sqrt(2) not sure
4. 10*Sqrt(2)

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