| d/dx | identity | % Correct |
|---|---|---|
| sin x | cos x | 100%
|
| cos x | -sin x | 100%
|
| tan x | sec^2 x | 46%
|
| sin x / x | 1 | 40%
|
| x / sin x | 1 | 40%
|
| sec x | sec x tan x | 32%
|
| csc x | -csc x cot x | 30%
|
| cot x | -csc^2 x | 26%
|
| (cos h - 1)/1 | 0 | 22%
|