高校数学 数I〜数C 解法の最初の一手 vs Math Solver Scanner

「この問題、まず何をする？」が一瞬で出てくる頭をつくる。 「初手」は、数学の問題を見た瞬間に“解法の最初の一手”を思い浮かべる力を、反射レベルまで鍛えるアプリです。完答は求めません。「まず何をするか」だけを、たくさん浴びて体に焼き付けます。 数学I・Aから数学II・B、さらに数学III・数学Cまで。理系受験でつかう範囲の「初手」がこの1本にそろいました。680をこえるパターン・4,500問以上を、1問数十秒のテンポで浴びられます。 初手は思い出せたのに、公式そのものがうろ覚えで手が止まる——そこを埋める「公式・定理集」も入っています。 ■ こんな人に ・公式は知ってるのに、問題を前にすると手が止まる ・応用問題で「どこから手をつければ?」と固まる ・共通テストや入試の過去問で、最初の一歩が思いつかない ・数III・数Cの極限／微分積分でも「まず何をするか」を反射で出したい ・短時間でテンポよく数学の感覚を鍛えたい ■ 特長 ・問題を見て「初手」を思い浮かべ、答え合わせ。1問数十秒のテンポ ・解けなかった所は責めない。「もう一度」にたまって、あとでやり直せる ・「鉄則帳」で覚えるべき定石を一覧。必須→発展まで自分のペースで ・「公式・定理集」で数I〜数Cの公式・定理を200件超、単元ごとに引ける。使いどころつき、必要なものには成立条件も ・問題と初手をセットで流し見する「ながめる」モード ・基礎の展開・因数分解から数III・数Cまで、同じ「初手」の考え方でひとつながり ■ 収録（数I・A・II・B・III・C — 理系受験でつかう範囲がまるごと） ・数学I+A: 数と式／集合と命題／2次関数／図形と計量（三角比）／データの分析／場合の数・確率／図形の性質／整数の性質 ・数学II+B: 式と証明／複素数と方程式／図形と方程式／三角関数／指数関数・対数関数／微分法・積分法／数列／統計的な推測／ベクトル ・数学III: 極限／微分法／積分法 ・数学C: 複素数平面／平面上の曲線（二次曲線・媒介変数・極座標） ※ ベクトルは新課程では数Cですが、受験の定番範囲として収録しています ※ 展開・因数分解は高校範囲の土台として、無料のウォームアップに収録しています ■ 無料と有料 ・一覧・初手マップ・鉄則帳・公式・定理集・「ながめる」の入口はずっと無料 ・全単元を自分の手で解いて記録に残すには、一度きりの買い切りで解放

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