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- True or false set{(x,x2):x∈Z}canbeseeasafunctionZ→Q. set{(x2,x):x∈Z}canbeseeasafunctionZ→Q.Substitution ciphers are encryption/decryption algorithms that replace one letter or number with another. The first attested use of a substitution cipher in military affairs was by Julius Caesar, described by him in Gallic Wars (cf. Kahn pp83-84). In caesar cipher , you replace each letter by 3rd letter on. If it is out of bound (later than Z), then round to the head (letter A) and continue the shift. For example:meet me after the toga party PHHW PH DIWHU WKH WRJD SDUWB Please write a program in Java to implement the Caesar Cipher: a. Implement the encryption algorithm. Ask the user to input one all lower case normal sentence (called plaintext) using the nextLine method, and then output the encrypted text (called ciphertext). b. Implement the decryption algorithm. Ask the user to input one encrypted sentence (i.e. ciphertext) using the nextLine method, and then output the decrypted text (i.e. plaintext).Write code that prints a random number of lines between 2 and 10 lines inclusive, where each line contains a random number of 'x' characters between 5 and 20 inclusive. For example: xxxxxxx xxxxxxxxxxxxxxxxxx xxxxxxxxxxxx xxxxxx xxxxxxxxxxx xxxxxxxxxxxxxxxx
- Cell E3 has the formula “=A20+C22”; If we copy the formula from E3 to E4, which one of the following will be the formula in cell E4? a. "=A20+D22" b. "=A21+C23" c. "=A21+D23" d. "=B21+D23"HALP m + n = 2k + 2k = 4k therefore adding even numbers always gives an even number. The above is wrong because.... it doesn't consider the case when adding to odd numbers m and n are different so you cannot use 2k for both it doesn't consider what m and n are for particular values in the integers it doesn't consider the case when m is even and n is oddadd a green leaf on the right side of flower my code n = 800; A = 1.995653; B = 1.27689; C = 8; r=linspace(0,1,n); theta=linspace(-2,20*pi,n); [R,THETA]=ndgrid(r,theta); % define the number of petals we want per cycle. Roses have 3 and a bit. petalNum=3.6; x = 1 - (1/2)*((5/4)*(1 - mod(petalNum*THETA, 2*pi)/pi).^2 - 1/4).^2; phi = (pi/2)*exp(-THETA/(C*pi)); y = A*(R.^2).*(B*R - 1).^2.*sin(phi); R2 = x.*(R.*sin(phi) + y.*cos(phi)); X=R2.*sin(THETA); Y=R2.*cos(THETA); Z=x.*(R.*cos(phi)-y.*sin(phi)); % % define a red map for our rose colouring red_map=linspace(1,0.25,10)'; red_map(:,2)=0; red_map(:,3)=0; clf surf(X,Y,Z,'LineStyle','none') view([-40.50 42.00]) colormap(red_map)
- Write a program to compute sin(x) for given x. The user should supply x and a positive integer n, where sin (x) = x - x 3 /3! + x5 /5! - x 7 /7! + x9 /9! +……+x n /n!Find the values of a, b, c and d needed to solve this puzzle int a = ? int b = ? int c = ? int d = ? char expect[128] = "There are 10 kinds of people in the world: those who understand binary and those who don't"; char actual[128] = {}; strcpy(actual,expect); int location1 = 5; int location2 = 17; ((int *)actual)[location1] = 0x58585858; ((int *)actual)[location2] = 0x59595959; *(((int *)actual) + a) = b; *(((int *)actual) + c) = d; if(strncmp(expect,actual,BUFSIZE) == 0){ return; } failure("Here are hints:\n- use two ints with 4 bytes to make the message right\n- beware of endian ordering angst\n");calculate number of operations in this algorithm void my_dgemv(int n, double* A, double* x, double* y) { double alpha=1.0, beta=1.0; int lda=n, incx=1, incy=1; cblas_dgemv(CblasRowMajor, CblasNoTrans, n, n, alpha, A, lda, x, incx, beta, y, incy); }
- A binary number is to be transfromed by appending three 0's to the end of the number. For example , 11101 is transformed to 11101000. Which of the following best dewcribes the relationship between the transformed number and the original.- The transfromed number is 3 times the value of the original number- The transformed number is 4 times the value of the original number- the transformed number is 8 times the value of the original number- The transformed value is 1000 times the value of the original numberWrite a program to compute number/binary string x such that SHA256(“yourEmailAdress || x”) <= 107839786668602559178668060348078522694548577690162289924414440996864 What you should be submitting: (a) Your program (b) The number xWhich of the following sets are equal? A = {x | x^2 − 4x + 3 = 0} B = {x | x^2 − 3x + 2 = 0} C= {x | x ∈ N, x < 3} D= {x | x ∈ N, x is odd, x < 5} E= {1, 2} F = {1, 2, 1} G= {3, 1} H= {1, 1, 3}