New math features (Doenet#1949)

This brings in changes from the math expressions library for commits between ab71641e5e1171c352af0941eaaf2624cea77216 and dd6c3b286cb1f78e897b0b3baa363374913e08d2

Summary of changes in new version of math expressions:

-  enable numerical comparison of vecs                  
-  add line segments
-  set containment with equality
-  begin support for integrals 
-  introduce a few units 
-  angle as operator, normalize arg order when compare 
-  parallel operator 
-  perp operator and lone symbol 
-  altvector with langle/rangle notation 
-  binom, vec, angle, floor, ceil exponents of non trig function are not moved outside
-  latex operatorname, nCr, nPr
-  evaluate log_b(a) 
-  function raised to -1 don't become reciprocal 
-  remove "\\," from latex output of factors

cypress/e2e/DoenetML/answerValidation/matchpartial.cy.js

@@ -4437,6 +4437,26 @@ describe('Match partial validation tests', function () {
       expect(text.trim().toLowerCase()).equal('50% correct')
     })
 
+    cy.log("Submit first as altvector")
+    cy.get('#\\/mi textarea').type("{ctrl+home}{shift+end}{backspace}\\langle 1,2\\rangle{enter}", { force: true, delay: 0 })
+    cy.get('#\\/ans1_submit').click();
+    cy.get('#\\/ans2_submit').click();
+
+    cy.get('#\\/ans1_partial').invoke('text').then((text) => {
+      expect(text.trim().toLowerCase()).equal('50% correct')
+    })
+    cy.get('#\\/ans2_partial').invoke('text').then((text) => {
+      expect(text.trim().toLowerCase()).equal('50% correct')
+    })
+
+
+    cy.log("Submit both as alt vectors")
+    cy.get('#\\/mi textarea').type("{end},\\langle 3,4\\rangle{enter}", { force: true, delay: 0 })
+    cy.get('#\\/ans1_submit').click();
+    cy.get('#\\/ans2_submit').click();
+
+    cy.get('#\\/ans1_correct').should('be.visible')
+    cy.get('#\\/ans2_correct').should('be.visible')
 
 
   });
@@ -4502,7 +4522,27 @@ describe('Match partial validation tests', function () {
       expect(text.trim().toLowerCase()).equal('50% correct')
     })
 
+    cy.log("Submit first as altvector")
+    cy.get('#\\/mi textarea').type("{ctrl+home}{shift+end}{backspace}\\langle 1,2\\rangle{enter}", { force: true, delay: 0 })
+    cy.get('#\\/ans1_submit').click();
+    cy.get('#\\/ans2_submit').click();
+
+    cy.get('#\\/ans1_partial').invoke('text').then((text) => {
+      expect(text.trim().toLowerCase()).equal('50% correct')
+    })
+    cy.get('#\\/ans2_partial').invoke('text').then((text) => {
+      expect(text.trim().toLowerCase()).equal('50% correct')
+    })
+
+
+
+    cy.log("Submit both as altvectors")
+    cy.get('#\\/mi textarea').type("{end},\\langle 3,4\\rangle{enter}", { force: true, delay: 0 })
+    cy.get('#\\/ans1_submit').click();
+    cy.get('#\\/ans2_submit').click();
 
+    cy.get('#\\/ans1_correct').should('be.visible')
+    cy.get('#\\/ans2_correct').should('be.visible')
 
   });