Vanderbilt University has confirmed it has launched an investigation into one of its maths professors after he allegedly asked students to calculate the rate of the expansion of Israel’s “occupation” in Palestine.

The private college, based in Nashville, Tennessee, is assessing whether a calculus exercise, brought to light by StopAntisemitism and reportedly set by Professor Tekin Karadağ, broke its academic rules.

According to a purported screenshot of the question shared on social media, it read: “Assume Palestine as a state with a rectangular land shape. There is the Mediterranean Sea on the west and the Jordan River on the east.

“From the river to the sea, Palestine (…) was approximately 100 km. in 1946. The land decreases by 250 sq. km/year, due to the occupation by Israel. How fast is the width of the land decreasing now?”