JiroFukuda Math Channel
@tamoshop
静岡県の公立高校の数学教員として長年受験指導をしてきました。藤枝東高校８年、静岡市立高校８年、静岡高校１２年。
最近更新 2026-09-06
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共 30 集Proof that a^a + b^b + c^c ≥ 3 when a + b + c = 3
Proof that a^a + b^b + c^c ≥ 3 when a + b + c = 3
2026-09-065 分钟The Relationship Between Arithmetic and Geometric Progressions
The Relationship Between Arithmetic and Geometric Progressions
2026-09-0610 分钟早稲田大学2026商学部第3問〜円錐を母線に平行な平面で切った切り口の面積の最大値
早稲田大学2026商学部第3問〜円錐を母線に平行な平面で切った切り口の面積の最大値
2026-09-0628 分钟Solve the functional equation xy=f(x)f(y)-f(x+y).
Solve the functional equation xy=f(x)f(y)-f(x+y).
2026-09-058 分钟Do there exist real numbers a, b, and c that satisfy a^b = b^c = c^a and are not all equal?
Do there exist real numbers a, b, and c that satisfy a^b = b^c = c^a and are not all equal?
2026-09-049 分钟早稲田大学2026商学部第2問〜漸化式と数列の最大値
早稲田大学2026商学部第2問〜漸化式と数列の最大値
2026-09-0413 分钟不等式の証明と根号を含む数値計算の値の評価
不等式の証明と根号を含む数値計算の値の評価
2026-09-038 分钟Proof that f(x) is identically zero when the function defined by a definite integral is monotonic...
Proof that f(x) is identically zero when the function defined by a definite integral is monotonic...
2026-09-028 分钟Waseda University 2026 School of Commerce Question 1 (4) — Sum of dot products of vectors from th...
Waseda University 2026 School of Commerce Question 1 (4) — Sum of dot products of vectors from th...
2026-09-0211 分钟Let's Prove Rolle's Theorem!
Let's Prove Rolle's Theorem!
2026-09-017 分钟Calculating Definite Integrals of Trigonometric Functions
Calculating Definite Integrals of Trigonometric Functions
2026-08-3110 分钟Waseda University 2026 School of Commerce, Question 1 (3): Minimum length of a polygonal line con...
Waseda University 2026 School of Commerce, Question 1 (3): Minimum length of a polygonal line con...
2026-08-317 分钟入れ子の根号不等式を解くコツ教えます。
入れ子の根号不等式を解くコツ教えます。
2026-08-3011 分钟Let's Solve This Functional Equation!
Let's Solve This Functional Equation!
2026-08-298 分钟早稲田大学2026商学部第1問(2)〜11次方程式の解の2乗を解に持つ11時次方程式
早稲田大学2026商学部第1問(2)〜11次方程式の解の2乗を解に持つ11時次方程式
2026-08-2910 分钟Let's Solve Integral Equations!
Let's Solve Integral Equations!
2026-08-286 分钟5個の実数の3個から残りの2個を引いた10個の数の積は5個の実数の平方の積以下であることの証明
5個の実数の3個から残りの2個を引いた10個の数の積は5個の実数の平方の積以下であることの証明
2026-08-278 分钟Waseda University 2026 School of Commerce Question 1 (1) — Maximizing the Area of a Shape Enclose...
Waseda University 2026 School of Commerce Question 1 (1) — Maximizing the Area of a Shape Enclose...
2026-08-274 分钟Proof That Adjacent Terms in a Sequence Defined by a Three-Term Recurrence Relation Are Relativel...
Proof That Adjacent Terms in a Sequence Defined by a Three-Term Recurrence Relation Are Relativel...
2026-08-268 分钟Proof That If 42 People Sit in a Row of 45 Cinema Seats, 10 Consecutive Seats Must Be Occupied
Proof That If 42 People Sit in a Row of 45 Cinema Seats, 10 Consecutive Seats Must Be Occupied
2026-08-253 分钟
