let steps = “”; const currencySymbol = “$”, fixedCurrency = “USD”; function calculateTI84(){ steps=””; const value = parseFloat(document.getElementById(“inputValue”).value); const operation = document.getElementById(“operation”).value; if(isNaN(value) || value <= 0){ alert("Please enter a valid positive number."); return; } let result = 0; switch (operation) { case "addition": result = value + 10; break; case "subtraction": result = value – 10; break; case "multiplication": result = value * 10; break; case "division": result = value / 10; break; case "exponentiation": result = Math.pow(value, 2); break; default: alert("Invalid operation selected."); return; } document.getElementById("result").value = formatCurrency(result); steps += `Inputs:
Value: ${formatCurrency(value)}
Operation: ${operation}

`; steps += `Formulas:
Result = Value ${operation === “addition” ? “+” : operation === “subtraction” ? “-” : operation === “multiplication” ? “*” : operation === “division” ? “/” : “^”} 10

`; steps += `Results:
Calculated Result: ${formatCurrency(result)}
`; if(document.getElementById(“calculationSteps”).style.display === “block”){ document.getElementById(“calculationSteps”).innerHTML = steps; } } function resetTI84(){ document.querySelectorAll(“#calculator input”).forEach(el => el.value = “”); steps = “”; document.getElementById(“calculationSteps”).innerHTML = “

Not calculated yet.

“; } function toggleSteps(){ const s = document.getElementById(“calculationSteps”); const a = document.getElementById(“toggleArrow”); if(s.style.display === “none” || s.style.display === “”){ s.style.display = “block”; a.style.transform = “rotate(180deg)”; s.innerHTML = steps || “

Not calculated yet.

“; } else { s.style.display = “none”; a.style.transform = “rotate(0deg)”; } } function formatCurrency(n){ return currencySymbol + n.toFixed(2) + ” ” + fixedCurrency; }