···Concavity of curve. Inflection point, concave down and concave up. Second derivative tangent lines of function. Mathematics resources for teachers andRFID:Image ID:2RCXF69PreviewSaveShareBuy the printImage detailsContributor:SAMYA JAKANE / Alamy Stock VectorImage ID:2RCXF69Releases:Model - no | Property - noDo I need a release?