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- Title
Problems.
- Authors
Eisenberg, Ted
- Abstract
Find the area of the triangle I ABC i . 5591: I Proposed by Daniel Sitaru, National Economic College "Theodor Costescu", Mehedinti, Romania i Solve for real numbers: HT <math altimg="urn:x-wiley:00366803:media:ssm12370:ssm12370-math-0005" display="block" xmlns="http://www.w3.org/1998/Math/MathML"><mrow><msup><mn>3</mn><mrow><mi>cos</mi><mspace width="0.166667em" /><mi>x</mi><mspace width="0.166667em" /><mo>+</mo><mspace width="0.166667em" /><mi>cos</mi><mspace width="0.166667em" /><mi>y</mi><mspace width="0.166667em" /><mo>+</mo><mspace width="0.166667em" /><mi>cos</mi><mspace width="0.166667em" /><mi>z</mi></mrow></msup><mspace width="0.166667em" /><mo>=</mo><mspace width="0.166667em" /><msup><mn>3</mn><mrow><msup><mi>cos</mi><mn>2</mn></msup><mi>x</mi><mspace width="0.166667em" /><mo>+</mo><mspace width="0.166667em" /><mi>cos</mi><mspace width="0.166667em" /><mi>x</mi></mrow></msup><mo>+</mo><mspace width="0.166667em" /><msup><mn>3</mn><mrow><msup><mi>cos</mi><mn>2</mn></msup><mi>y</mi><mspace width="0.166667em" /><mo>+</mo><mspace width="0.166667em" /><mi>cos</mi><mspace width="0.166667em" /><mi>y</mi></mrow></msup><mo>+</mo><mspace width="0.166667em" /><msup><mn>3</mn><mrow><msup><mi>cos</mi><mn>2</mn></msup><mi>z</mi><mspace width="0.166667em" /><mo>+</mo><mspace width="0.166667em" /><mi>cos</mi><mspace width="0.166667em" /><mi>z</mi></mrow></msup></mrow></math> ht 5592: I Proposed by Michel Bataille, Rouen, France i Let I n i be a positive integer.
- Subjects
REAL numbers; VALLEYS
- Publication
School Science & Mathematics, 2020, Vol 120, Issue 4, p258
- ISSN
0036-6803
- Publication type
Article
- DOI
10.1111/ssm.12370