Response Areas¶

Numerical answers¶

A numerical answer box

This type of response area expects a numerical answer. Usually, a tolerance is allowed, so you will still be marked as correct if your response differs from the answer by a small amount.

A numerical answer box, with units

Some questions will also require you to enter the units of the answer. In this case, any form of the same unit, with any SI prefix, should be accepted. For example, if the answer to a question is 10 MPa, 0.01 GPa and 10 MNm^-2 should both be marked correct.

Entering mathematical expressions¶

Entering mathematical expressions on Lambda is very similar to if you were doing it in Matlab, for example.

Examples¶

Expression	Lambda Feedback input
$x^2 - x - 2$	`x^2 - x - 2`
$\sqrt{\sin(x) + \frac{\pi}{2}}$	`sqrt(sin(x) + pi/2)`
$e^{\frac{\pi x}{2} + 1}	`exp((pi*x)/2 + 1)`

Reference¶

Operator	Symbol	Lambda Feedback input
Addition	$a + b$	a+b
Subtraction	$a - b$	a-b
Multiplication	$a \times b$	a*b
Division	$\frac{a}{b}$	a/b
Exponentiation	$a^b$	a^b
Square root	$\sqrt{a}$	sqrt(a)

Common elementary functions such as $\sin$, $\cos$, $\arcsin$, $\ln$ etc. are also supported.

Expression	Lambda Feedback input
\(x^2 - x - 2\)	`x^2 - x - 2`
\(\sqrt{\sin(x) + \frac{\pi}{2}}\)	`sqrt(sin(x) + pi/2)`
$e^{\frac{\pi x}{2} + 1}	`exp((pi*x)/2 + 1)`

Operator	Symbol	Lambda Feedback input
Addition	\(a + b\)	a+b
Subtraction	\(a - b\)	a-b
Multiplication	\(a \times b\)	a*b
Division	\(\frac{a}{b}\)	a/b
Exponentiation	\(a^b\)	a^b
Square root	\(\sqrt{a}\)	sqrt(a)