mathsteps-experimental-fork/dist/cjs/lib/kemuEquation/solveProviders/C_EQ_C.js

Step by step math solutions. Experimental Fork

'use strict';

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

const index = require('../../node/index.js');
const index$1 = require('../../simplifyExpression/index.js');

const NODE_TRUE = index.default.Creator.symbol('true');
const NODE_FALSE = index.default.Creator.symbol('false');

const C_EQ_C = {
  id: 'C_EQ_C',
  pattern: 'C=C',
  solveFunction: (equation) => {
    // Simplify both side before step.
    equation.simplifyLeft();
    equation.simplifyRight();
    // Fetch LR nodes.
    const leftNode = equation.left.node;
    const rightNode = equation.right.node;
    // Try to calculate L-R difference.
    const diffNode = index$1.default.newApi(index.default.Creator.operator('-', [leftNode, rightNode]));
    if (index.default.Type.isConstant(diffNode)) {
      // L - R gives a constant number.
      // We can check equality directly.
      if (index.default.Type.isZero(diffNode)) {
        // L - R = 0
        // Solution is true.
        equation.applySolution([NODE_TRUE]);
      }
      else {
        // L - R != 0
        // Solution is false.
        equation.applySolution([NODE_FALSE]);
      }
    }
  },
};

exports.C_EQ_C = C_EQ_C;