Complex type in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a complex number with real part 3 and imaginary part 4.

R Programming

z <- complex(real = [1], imaginary = 4)

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A4

B3

C5

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the imaginary part in the real argument.

Using 0 instead of 3 for the real part.

The complex() function creates a complex number. The real part is 3, so we fill in 3.

2fill in blank

medium

Complete the code to get the imaginary part of the complex number z.

R Programming

imag_part <- [1](z)

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AMod

BRe

CArg

DIm

Attempts:

3 left

💡 Hint

Common Mistakes

Using Re() which returns the real part.

Using Mod() which returns the magnitude.

The function Im() returns the imaginary part of a complex number in R.

3fill in blank

hard

Fix the error in the code to create a complex number with real part 2 and imaginary part 5.

R Programming

z <- complex([1] = 2, imaginary = 5)

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Aimaginary

Bimag

Creal

Dim

Attempts:

3 left

💡 Hint

Common Mistakes

Using imaginary for the real part.

Using incorrect argument names like im or imag.

The correct argument name for the real part in complex() is real.

4fill in blank

hard

Fill both blanks to create a vector of complex numbers with real parts 1 to 3 and imaginary parts 4 to 6.

R Programming

z_vec <- complex(real = [1], imaginary = [2])

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A1:3

B4:6

Cc(1,2,3)

Dc(4,5,6)

Attempts:

3 left

💡 Hint

Common Mistakes

Using mismatched lengths for real and imaginary parts.

Using vectors with wrong values.

Use 1:3 for real parts and 4:6 for imaginary parts to create the vector.

5fill in blank

hard

Fill all three blanks to create a named list of complex numbers where keys are uppercase letters and values are complex numbers with real parts 1 to 3 and imaginary parts 3 to 5.

R Programming

names <- toupper(letters[1:3])
values <- complex(real = [1], imaginary = [2])
complex_list <- setNames([3], names)

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A1:3

B3:5

Cvalues

Dc(1,2,3)

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong sequences for real or imaginary parts.

Putting the wrong variable inside the list.

Use 1:3 for real parts, 3:5 for imaginary parts, and the variable values as the list elements.