Senior high school mathematics needs four trigonometric functions to solve. - Training Enrollment Network

Senior high school mathematics needs four trigonometric functions to solve.

F(x)=sin(wx+y is an even function on r; F(0)= 1 or f(0)=- 1 (omitted because 0≤y≤π)

From sin(y)= 1，y =π/2；

So f(x)=sin(wx+π/2)=coswx image is symmetrical about point m (3π/4,0), and cosw(3π/4)=0.

W(3π/4)=π/2, so w=2/3.

Related articles

Mathematics Difficulty Coefficient of Zhejiang College Entrance Examination in 2023

Summary of compulsory mathematics knowledge points in senior three

Senior three ends Jining mathematics.

Calculation of shadow area in primary school mathematics

Measures and summary of helping students with learning difficulties

First round of college entrance examination teaching assistant ranking

How did negative numbers come from? Stop joking.

The origin and origin of Guan surname

All the formulas of sixth grade olympiad

Head of Gansu Division of Higher Education Club Cup of National Mathematical Modeling Competition?