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Question: you can calculate them with matlab i need only answers...

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Problem set # 21 I. Solve the linear system using Gaussmethod: 2x, -2x, -3x, -7x, +2x, 5 Solve the equation sin(2x +0.4) by the Newtons method (absolute error 0.00001). 3. Solve the Cauchy problem (1+x)y 4xy+6y 0,y(0)-Iy (0)-6 on the interval (0.1). Plot 2. the graphs of y(x)and y(x). 4. Using secant method find the smallest positive number a such that d2(absolute error -0.0001). 5. Solve the system using the method of minimal residual (initial approximation x=0. x10)-2, x30) =0, the error ε-0.001). 4 +sin x 7x1 +16x2-7x, = 37 %,-7x2 +107x3-4 6. Using the Jacobi method, find the solution of the system after 60 iterations: 10x, +12x, +10x, -21 %, +10x2 +12x3-2 The initial approximation is xt o 0 Interpret the results. Which other iterative methods can you recommend for the solution of the given system? 7. Suppose that f(x)6x+18. Find the extrema of the function f(x)(the problem can be solved in case your aim is to get grade ,10)
You can calculate them with matlab. I need only answers
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