Question

Write a script le using conditional statements to evaluate the following function, assuming that the scalar variable x has a value. The function is

Y = ex+1 for x < -1, y = 2 + cos(πx) for -1 ≤ x ≤ 5, and y = 10(x - 5) + 1 for x ≥ 5. Use your le to evaluate y for x = -5, x = 3, and x = 15, and check the results by hand.

Answer 1

Matlab script file for following function is to evaluate x = -5

x = -5;

if x < -1

y = exp(x + 1);

elseif x < 5

y = 2 + cos(pi*x);

else

y = 10*(x - 5) + 1;

end

 

Output: y = 0.0183

 

Matlab script file for following function is to evaluate x = 3

x = 3;

if x < -1

y = exp(x + 1);

elseif x < 5

y = 2 + cos(pi*x);

else

y = 10*(x - 5) + 1;

end

 

output: y = 1

 

Matlab script file for following function is to evaluate x = -15

x = -15;

if x < -1

y = exp(x + 1);

elseif x < 5

y = 2 + cos(pi*x);

else

y = 10*(x - 5) + 1;

end

 

output: y = 101

Output: y = 0.0183

output: y = 1