Python - Numpy Quiz 3

What would be the answer of this cummulative summation in NumPy?

arr = np.array([1,2,3])

print(np.cumsum(arr))

• [1 3 6]

• [6]

• [3 6 9]

• [9]

What is a correct syntax to subtract the numbers from arr1 with the numbers from arr2?

• np.substract(arr1, arr2)

• np.min(arr1, arr2)

• np.sub(arr1, arr2)

• np.minus(arr1, arr2)

What is a correct method to round decimals in NumPy?

• np.around()

• np.trunc()

• All the other 3 are rounding methods in NumPy

• np.fix()

What is the correct method for getting the Natural Logarithm (Logarithm at base e)?

arr = np.arange(1, 10)

• np.log(arr)

• np.loge(arr)

• np.natural(arr)

• np.ln(arr)

What is the result of the following syntax?

arr = np.array([100, 200, 50, 75])

newarr = np.diff(arr)

print(newarr)

• [100 -150 25]

• [-100 150 -25]

• [100 25]

• -100 -25]