How to reproduce:

• Login as admin
• Navigate to Site admin >  Plugins > Filters > Manage Filters
• Turn ON the Algebra notation filter and apply to Content
• Edit your profile
• In the description type the below text:

  @@sin(z)/(x^2+y^2)@@

• Click the Update profile button

EXPECTED

• You will see Algebraic Notation without any errors

ACTUAL

• There is an error "Call to undefined function filter_algebra\filter_algebra_image()"