Other Engineering Answers

1) Show that cos A * cos B = 0.5 [cos(A+B) + cos(A-B)] . Some English is essential in
addition to the algebra. Note that cosine is an even function so that cos(A-B) = cos(BA).
2) A mixer has a local oscillator at 1157 kHz and a bandpass filter centred at 455 kHz.
What are the centre frequencies of signals which would cause output from the filter?
How is it that a radio receiver accepts only one channel of input signal?

1. Write a program that computes the perimeter and the area of a rectangle. Define your own values for the length and width. (Assuming that L and W are the length and width of the rectangle, Perimeter = 2*(L+W) and Area = L*W. Display the output on the screen using dbms_output.put_line.

Does a mosquito flying inside a moving car, experiences a force in the opposite direction of the motion of the car? you told that it will experience a inertial force? But it would be in rest with the outside world and why will we consider it with respect to the car as none of its body part is contact with the car?

If the user enters the input as my name is sai i want to display the output as "my" "name" "is" "sai"
please give me the program in C

In the Byteland country a string "S" is said to super ascii string if and only if count of each character in the string is equal
to its ascii value.
In the Byteland country ascii code of 'a' is 1, 'b' is 2 ...'z' is 26.
Any string "S" can be converted to super ascii string by performing operations like addition or removal of a character.
Your task is to find out the minimum number of operations required to convert the string to super ascii string.

You are given a square matrix of dimension N. Let this matrix be called A. Your task is to rotate A in clockwise direction by S degrees, where S is angle of rotation. On the matrix, there will be 3 types of operations viz.

Rotation

Rotate the matrix A by angle S, presented as input in form of A S

Querying

Query the element at row K and column L, presented as input in form of Q K L

Updation

Update the element at row X and column Y with value Z, presented as input in form of U X Y Z

Print the output of individual operations as depicted in Output Specification

what is the ethical responsibility does a designer has?

Expand the following Boolean functions into their canonical form f(X, Y, Z) =XY+YZ’+XZ’+X’Y ?

Find the Inverse of these Functions:

f(x)= square root x + 1

f(X) =x^2 + x - 1

f(x) = 2x - 4

f(x)= (4-x) / 3+x

can the principle of petrol engine changed alike diesel engine?. instead of using petrol-air mixture, can i use it like diesel in engine.