MATH LIBRARY

MATMATICAL FUNCTION

PI():- This is also a field of the Method class which returns you a default pi value, the ratio of the circumference of a circle to its diameter.

e.g  System.out.println("pi = " + Math.round(Math.PI*100)/100f);
output ;- pi = 3.14

abs():- This is the abs() function which returns you the absolute number.

e.g. System.out.println("Absolute number = " + Math.abs(Math.PI));
output Absolute number = 3.141592653589793

ceil()This is the ceil() function which returns you the smallest value but greater than the argument.

System.out.println("Smallest value but greater than the argument = " + Math.ceil(Math.PI));

System.out.println("Round up Math.ceil(28.29)= " + Math.ceil(28.29));

System.out.println("Round up Math.ceil(-28.29)= " + Math.ceil(-28.29));

output:-

Smallest value but greater than the argument = 4.0

Round up Math.ceil(28.29)= 29.0

Round up Math.ceil(-28.29)= -28.0

exp()This is the exp() function which returns you the exponential value raised to the power of a double value.

System.out.println("Exponent number powered by the argument = " + Math.exp(0));
output:-

Exponent number powered by the argument = 1.0

floor()This is the floor() function which returns you the largest value but less than the argument.

System.out.println("Largest value but less than the argument = " + Math.floor(Math.E));

System.out.println("Round down  Math.floor(28.89)= " + Math.floor(28.89));

System.out.println("Round down Math.floor(-28.89)= " + Math.floor(-28.89));

output:-

Largest value but less than the argument = 2.0

Round down  Math.floor(28.89)= 28.0

Round down Math.floor(-28.89)= -29.0

max()This is the max() function which distinguishes the maximum value from the two given value.

System.out.println("Maximum Number = " + Math.max(10,10.3));

Output:-

Maximum Number = 10.3

min()This is the min() function which distinguishes the minimum value from the two given value.

System.out.println("Minimum Number = " + Math.min(10,10.3));
Output:- Minimum Number = 10.0

pow()This is the pow() function which returns you the number raised to the power of a first given value by the another one.

System.out.println("Power = " + Math.pow(10,3));
output:- Power = 1000.0

random()This is the random() function which returns you the random number. It is absolutely system generated.

System.out.println("Random Number = " + Math.random());
Output:-

Random Number = 0.8746318896388414

rint()This is the rint() function which returns you a value closest to the given value.

System.out.println("Closest to the Argument = " + Math.rint(30));
Output:-

Closest to the Argument = 30.0

round()This is the round() function which returns you a value that is in the rounded form.

System.out.println("Round = " + Math.round(2.72));

System.out.println("Round  Math.round(28.89)= " + Math.round(28.89));

System.out.println("Round  Math.round(28.29)= " + Math.round(28.29));
Output:-

Round = 3

Round  Math.round(28.89)= 29

Round  Math.round(28.29)= 28

sqrt( ) This is the sqrt() function which returns you the square root of the specified value.

System.out.println("Square Root = " + Math.sqrt(400));

Output:- Square Root = 20.0

ICSE COMPUTER APPLICATIONS  Math class Output based Questions

CHAPTER: CLASS AS BASIS OF ALL COMPUTATION WORKSHEET # 3

11)     System.out.println(Math.sqrt(4.0)+Math.sqrt(9.0));
Ans______________________

22)      System.out.println(Math.pow(2,4))
Ans______________________

33)     System.out.println(Math.max(Math.max(2,3),Math.max(9,7)));
Ans______________________

44)     System.out.println(Math.min(Math.max(20,13),Math.min(9,7)));
Ans______________________

55)      System.out.println(Math.round(2.4));
Ans______________________

66)      System.out.println(Math.round(2.9));
Ans______________________

77)      System.out.println(Math.round(2.5));
Ans______________________

88)      System.out.println(Math.rint(2.4));
Ans______________________

99)      System.out.println(Math.rint(2.9));
Ans______________________

110)  System.out.println(Math.rint(2.5));
Ans______________________

111)  System.out.println(Math.rint(3.5));
Ans______________________

112)  System.out.println(Math.ceil(2.4));
Ans______________________

113)  System.out.println(Math.ceil(2.9));
Ans______________________

114)  System.out.println(Math.ceil(2.0));
Ans______________________

115)  System.out.println(Math.ceil(2.4));
Ans______________________

116)  System.out.println(Math.ceil(-2.4));
Ans______________________

117)  System.out.println(Math.ceil(-2.9));
Ans______________________

118)  System.out.println(Math.ceil(-2.0));
Ans______________________

119)  System.out.println(Math.floor(2.4));
Ans______________________

220)  System.out.println(Math.floor(2.9));
Ans______________________

221)  System.out.println(Math.floor(2.0));
Ans______________________

222)  System.out.println(Math.floor(-2.4));
Ans______________________

223)  System.out.println(Math.floor(-2.9));
Ans______________________

224) System.out.println(Math.floor(-2.4)+Math.ceil(-2.4)+Math.round(2.7));
Ans______________________

225) System.out.println(Math.abs(2.4)+Math.abs(-2.4));
Ans______________________

226)  System.out.println(Math.floor(-2.4));
Ans______________________

227)   System.out.println(Math.pow(4,1/2));
Ans______________________

228)   System.out.println(Math.pow(4,1.0/2));
Ans______________________

229)  System.out.println(Math.pow(4,Math.max(2,3)));
Ans______________________

330)   System.out.println(Math.ceil(Math.abs(-9.6));
Ans______________________