!DOCTYPE html html lang="zh-CN" head meta charset="UTF-8" meta content="width=device-width,initial-scale=1.0" title万能计算器 · 最终版/title style:root{--bg:#080d15;--fg:#c8d8e8;--accent:#00d4aa;--border:#1c2e42;--inp:#0b1220;--card:#0e1728;--hover:#132038}*{margin:0;padding:0;box-sizing:border-box}body{background:var(--bg);color:var(--fg);font-family:'JetBrains Mono',Consolas,monospace;display:flex;justify-content:center;align-items:flex-start;min-height:100vh;padding:16px}.wrap{width:100%;max-width:1060px;background:var(--card);border:1px solid var(--border);border-radius:16px;padding:28px 32px}h2{font-size:15px;letter-spacing:4px;color:var(--accent);text-align:center;margin-bottom:22px}.tabs{display:flex;gap:3px;margin-bottom:20px;flex-wrap:wrap}.tab{padding:10px 20px;background:#060c16;border:1px solid var(--border);color:#6888a8;cursor:pointer;border-radius:8px 8px 0 0;font-size:13px}.tab:hover{color:var(--fg);background:var(--hover)}.tab.active{background:var(--card);border-bottom-color:var(--card);color:var(--accent)}.panel{display:none}.panel.active{display:block}.subpanel{display:none}.subpanel.active{display:block}label{font-size:12px;color:#5a7a9a;margin-bottom:6px}textarea,input,select{width:100%;background:var(--inp);border:1px solid var(--border);color:var(--fg);padding:14px;border-radius:8px;margin:6px 0;font-family:inherit}input[type=number]{width:120px;display:inline-block;margin-right:8px}select{width:auto;display:inline-block}.btn-row{display:flex;gap:8px;margin:10px 0;flex-wrap:wrap}button{background:var(--accent);border:none;color:#000;font-weight:700;padding:12px 18px;border-radius:8px;cursor:pointer;font-family:inherit}.btn-copy{background:transparent;border:1px solid var(--border);color:#6888a8}.res-wrap{background:var(--inp);border:1px solid var(--border);border-radius:10px;margin-top:14px}.res-head{display:flex;justify-content:space-between;align-items:center;padding:8px 16px;background:#0a1018;border-bottom:1px solid var(--border);font-size:11px;color:#4a6a8a}.res-body{padding:18px;line-height:1.8;font-size:15px;overflow-x:auto;white-space:pre-wrap;max-height:500px;overflow-y:auto}.param-group{border:1px dashed var(--border);padding:12px;border-radius:8px;margin:10px 0}.group-title{font-size:12px;color:#6888a8;margin-bottom:8px}.g{color:#00e5a0}.r{color:#ff5570}.v{color:#c0a0ff}.y{color:#ffd060}/style /head body div h2万能计算器 · 最终版/h2 div div表达式/div div矩阵/div div线性方程组/div div布尔逻辑/div div五元推理/div div方程求解/div /div div label输入表达式/label textarea rows="2"1/sqrt(1-0.8^2)/textarea div button计算/button button清空/button /div divdivspan结果/span/divdiv/div/div /div div div div单矩阵运算/div textarea rows="4"1 2 3 4 5 6 7 8 10/textarea div button行列式/buttonbutton转置/buttonbutton逆/button button秩/buttonbutton最简形/button button特征值/buttonbuttonSVD/button /div /div div div双矩阵乘法（空行分隔）/div textarea rows="4"1 2 3 4 5 6 7 8/textarea buttonA×B/button /div divdivspan结果/span/divdiv/div/div /div div label输入增广矩阵/label textarea rows="3"2 3 8 5 -2 1/textarea div button求解/button button求解(含步骤)/button /div divdivspan结果/span/divdiv/div/div /div div label布尔表达式/label textarea rows="2"(AB)|!C/textarea button真值表/button divdivspan结果/span/divdiv/div/div /div div label变量 + 推理规则/label textarea rows="6"v=0.9 v0.1, v, 0, -, 1 v=0.1v0.9, v/sqrt(1-v^2), 1, P, 0 v=0.9, 1/sqrt(1-v^2), 2, G, 1/textarea button推理/button divdivspan结果/span/divdiv/div/div /div div div divODE/div div非线性方程/div div积分方程/div divPDE/div /div div div div常微分方程 y' = f(x,y)/div label方程表达式/label textarea rows="1"x*y + sin(x)/textarea label初始条件/label input type="number" value="0" step="any" placeholder="x0" input type="number" value="1" step="any" placeholder="y0" label求解参数/label input type="number" value="0.1" step="0.01" min="0.0001" placeholder="步长h" input type="number" value="100" min="1" max="10000" placeholder="步数N" /div button求解 ODE/button divdivspan结果/span/divdiv/div/div /div div div div非线性方程 f(x)=0/div label方程表达式/label textarea rows="1"x^3 - 2*x - 5/textarea label求解参数/label input type="number" value="2" step="any" placeholder="初值x0（牛顿法）" input type="number" value="2" step="any" placeholder="区间下限a（二分法）" input type="number" value="3" step="any" placeholder="区间上限b（二分法）" /div button牛顿法求解/button button二分法求解/button divdiv class="res-h
