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A computer system is a basic, complete and functional hardware and software setup with everything needed to implement computing performance.

That’s the basic working definition of the computer system as we know it, but it has gone through a lot of formal changes over the past few decades.

It is used to delete/remove the tuples/rows from the table.
Syntax:
DELETE from tablename [WHERE Condition];
Example:
DELETE from student;

Prove that X + XY = X.

• The ifstream class supports input operations whereas ofstream class supports output operations on file.
• The ifstream class inherits functions from is stream whereas stream class inherits functions from ostream.
• The inherited member functions of ifstream are get(), getlineQ, read(), seekgQ and tellgO whereas ofstream member function are put(), write(), seekp() and tellp().

The ifstream class supports input operations on files and is derived from istream class. The class ofstream class supports output operations on files and is derived from ostream class.

Database systems are designed in multi-layers. A major objective for layer architecture is to provide data independence, which means that upper levels are unaffected by changes in lower levels.

There are two kinds of data independence:

• Logical data independence
• Physical data independence

A minterm is a special product of literals, in which each input variable appears exactly once. A maxterm is a sum of literals, in which each input variable appears exactly once.

This ifstream class supports input operations on files and ofstream class supports output operations on files.

The Class allows to group functions and data variables. The class is a way to grouping objects having similar characteristics. The objects can be made user-defined data type with the help of a class.

It is a special function used to release the memory space allocated by the object.

General Syntax of Destructors

~ classname();

The above is the general syntax of a destructor. In the above, the symbol tilde ~ represents a destructor which precedes the name of the class.

The lifeline support systems that get damaged in disasters are communication, power supply and water supply systems. Drainages get are damaged. Healthcare and hospitals come under severe stress. Commercial and economic activities are badly affected. Life, then, almost comes to a standstill.

The recent World Disaster Report says that disasters have increased in number and intensity.

The central government, with proper coordination with various ministries, give the necessary support to the states. This includes defence services like air dropping, rescuing, searching, transport of relief goods, etc. and availability of railway and ferry services, health personnel and medical support.

The rescue teams should have special skills and attitudes in dealing with disasters. They need to be well equipped and should have the latest technologies.

My locality is not at all prepared to manage any potential danger. The streets are so narrow in the township that not even a firetruck can enter the place in case of a fire disaster. At least the Municipality should take steps to widen the roads so that the victims can be reached in case of a disaster.

India has only 2% of the total geographical area, but it supports 18% of the total population. This causes a tremendous pressure on the natural resources.

Tsunami is a relatively new natural disaster in India. Due to the lack of an adequate warning system, the tsunami of 2004 destroyed a large portion of the coastal regions of Tamil Nadu, Kerala, Andhra Pradesh and also the Andaman and Nicobar Islands. It killed many people and destroyed properties worth many crores.

The deadliest disaster is drought. It accounts for 48% of deaths due to natural disasters.

The fact that disasters like earthquakes, floods, cyclones, landslides, droughts, accidents, plane crashes and forest fires have increased in their number and intensity is true about both developed and developing countries.

There is a direct correlation between human development and better preparedness to manage disasters. The less developed countries are more prone to suffer damages caused by disasters.

The man-made disaster that India witnessed in the last century is the Bhopal Gas Tragedy of 1984.

Given equation of curve is y = x³ − 11x + 5.

The slope of tangent to the curve at point (x, y) is 3x² − 11. ... (1)

Given that the equation of tangent to the curve at point (x, y) is y = x − 11.

Therefore, the slope of tangent to the curve at point (x, y) is 1. ... (2)

Therefore, 3x² − 11 = 1

⇒ 3x² = 12

⇒ x² = 4

⇒ x = ±2.

If x = 2 then, y = 2 − 11 = −9

which also satisfies the equation of given curve.

And x = −2, then y = −2 − 11 = −13 which not satisfying the equation of curve y = x ³ − 11x + 5 .

Therefore, (−2, −13) is not the point where the tangent to the curve = x³ − 11x + 5 is = x − 11.

Hence, the tangent to the curve y = x³ − 11x + 5 at the point (2, -9) is y = x − 11.

Romeo praises Juliet’s beauty with many similes. He compares her beauty to a rich jewel in an Ethiope’s ear. Her beauty is too rich for use and expensive on the earth. Then he compares her as a white as snowy dove which differs from the crows. In the opening lines, he exaggerates that Juliet’s beauty surpasses the brightness of light. His comparision shows his passion and excess possessiveness towards Juliet, hence the names Romeo and Juliet are immortal in the world.

In Act 1 Scene 5, of the Shakespearean play ‘Romeo and Juliet’, Romeo is spellbound after seeing Juliet.

He has used simile by comparing her extraordinary beauty with a beautiful piece of jewelry.

In other instances too he has compared Juliet to an angel who has come down to Romeo’s life in order to enlighten it with her fairness.

Correct option: 1. Eyes and lip pencils

Code snippet of the above problem is given below use it and complete the program.

This program contains one function called change() having one argument which is integer pointer. A change() function increment the pointer variable ‘b’ by 1. In main() function change() function is called and prints the array element from end which is incremented by 1 in change() function 

float volume(float side)

{

return side*side*side;

}

float volume(float radius, float height)

{

return 3.14*radius*radius*height;

}

float volume(float length, float breadth, float height);

{

return length*breadth*height;

}

Correct answer is a. Styles

Let side of square be a cm.

Given that \(\frac{da}{dt} = -1.5 cm/sec\) 

\(\because A = a^2\)

⇒ \(\frac{da}{dt}= 2a\frac{da}{dt} = -3a\, cm^2/sec\)

⇒ \(\left[\frac{dA}{dt}\right]\, \text{at} \,a = 8cm = - 3 \times 8 = -24 cm^2/sec.\) 

Hence, area of square is decreasing at the rate of 24 cm²/ sec when its side is 8 cm.

Correct answer is a. Mail Merge 

y² + 6y = 2x – 5 

Adding '9' on both sides we get, 

y² + 6y + 9 = 2x – 5 + 9 

[y – (–3)]² = 2x + 4 

[y – (–3)]² = 2[x – (–2)] 

Comparing with (y – k)² = 4a (x – h) we get, 

(h, k) = (–2, –3), a = (1/2) 

Equation of the axis y – k = 0 i.e. y + 3 = 0 

Equation of the directrix x – h + a = 0 

i.e., x – (–2) + (1/2) = 0 

2x + 5 = 0.

r = 2h

∴ Base area = πr² = π(2h)² = 4πh²

C.S.A. of cylinder = 2πrh = 2π(2h)h 

 = 4πh²

Hence, C.S.A. = Base area

Correct answer is a. Arrangement 

Thickness  = 1 unit

radius = r unit

Number or coins = h

When we stacked coins on upon the other, we get the object cylinder.

Height of formed cylinder = thickness of 1 coin x Number of coins

= 1 x h = h unit

Radius of formed cylinder = r unit

∴ C.S.A. of formed cylinder = 2πrh unit²

Write B ∪ C = D then P(A ∪ B ∪ C) = P(A ∪ D)

∴ P(A ∪ D) = P(A) + P(D) – P(A ∩ D)

= [P(A) + P(B ∪ C) – P(A ∩ (B ∪ C)]

= P(A) + P(B) + P(C) – P(B ∩ C) – [P(A ∩ B) ∪ (A ∩ C)]

= P(A) + P(B) + P(C) – P (B ∩ C) – [P(A ∩ B) + P(A ∩ C) – P(A ∩ B ∩ D ∩ C]

P(A ∪ B ∪ C) = P(A) + P(B) + P(C) – P(A ∩ B) – P(B ∩ C) – P (C ∩ A) + P(A ∩ B ∩ C).

C.V. = 60, σ = 21, X̄ = 2,

Formula: C.V.= σ/X x 100

60 = 21/X x 100

∴ X̄ = (21 x 100)/60 = 35

d = |(c₁ - c₂)/√(a² + b²)|

c₁ = 7 a = 3

c₂ = 5 b = - 4

d = |((7) - (5))/√(3² + 4²)| = |2/5| = 2/5

P : the two lines are paraallel V : line do not internet in the some plane. 

∴ converse = q → p = If the two lines do not internet in the same plane then they are parallel. 

Contrapositive: If the two lines intersect in the same plane they are parallel.

C.V.= 60, σ = 21, X̄ = ? .

C.V. = σ/X x 100 ⇒ 60 = 21/x x 100

⇒ x = (21 x 100)/60 = 35