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Lab 1 : Solutions


Topics in this lab

First, make sure the formatting is set so that we see all the digits.

>> format long

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Exercise 1

>> 1 + 2*(3 + 4^5)
ans =

        2055

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Exercise 2

>> 17+3/2016 + 1/(4-2^5)
ans =

  16.965773809523810

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Exercise 3

>> 5 + 1/(3 + 1/(4 + 1/12))
ans =

   5.308176100628931

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Exercise 4

>> (4.34 + 5.61)^8.1
ans =

     1.208834800102942e+08

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Exercise 5

>> 3.1e12*4.5e-2
ans =

     1.395000000000000e+11

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Exercise 6

>> (-1)^(1/3)
ans =

  0.500000000000000 + 0.866025403784439i

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Exercise 7

>> nthroot(-1,3)
ans =

    -1

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Exercise 8

>> (10^2)^(1/2)
ans =

    10

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Exercise 9

>> 10^sqrt(2)
ans =

  25.954553519470089

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Exercise 10

>> 2.1^(0.3^4.6)
ans =

   1.002922529144916

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Exercise 11

>> 5 + 1/(2*sin(2))
ans =

   5.549875085147308

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Exercise 12

>> (2+sin(2.3))^(5*cos(5.6))
ans =

  50.237152849829172

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Exercise 13

>> log(1/exp(1))
ans =

    -1

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Exercise 14

>> (log10(sin(4.3) - tan(1.1) + 5)^(3.1^exp(1)))
ans =

     2.887248214706980e-11

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Exercise 15

>> cosh(pi) - (exp(pi) + exp(-pi))/2
ans =

     0

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Exercise 16

>> 1 + tan(5.4)^2 - sec(5.4)^2
ans =

     4.440892098500626e-16

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Exercise 17

>> sqrt(16*atan(1)^2/(cos(pi/2)^2 - sin(pi/2)^2))
ans =

  0.000000000000000 + 3.141592653589793i

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Exercise 18

>> acos(-0.23)
ans =

   1.802874009657610

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Exercise 19

>> acos(0.6)
ans =

   0.927295218001612

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Exercise 20

>> cosd(46)
ans =

   0.694658370458997

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Exercise 21

>> acosd(123)
ans =

      0.000000000000000e+00 + 3.154313150184429e+02i

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Exercise 22

>> log(11)/log(2)
ans =

   3.459431618637298

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Exercise 23

>> (2+3i)*(2-3i)

complex(2,3)*complex(2,-3)
ans =

    13


ans =

    13

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Exercise 24

>> z = complex(2,3)
sin(z) - (exp(1i*z) - exp(-1i*z))/2i
z =

  2.000000000000000 + 3.000000000000000i


ans =

     1.776356839400250e-15

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Exericse 25

>> log(-2)
ans =

  0.693147180559945 + 3.141592653589793i

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Exerciese 26

>> atan2(3,-2)
ans =

   2.158798930342464

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Get the code

Do you want to try the above code fragments on your own? Download the Matlab script that produces this page here. (lab_1_solns.m)

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