show that f(x)=cos(x) is even and what is its graphical property
If the function is even, f(x) = f(-x).cos(-x) is the same value as cos(+x) therefore the function is even. Its graphical property is that it is symmetrical about the y axis as all even functions are.
MP
Related Maths A Level answers
All answers ▸Differentiate y = lnx + 4x^2 + 3e^4x with respect to x
Find the area encompassed by y=(3-x)x^2 and y=x(4-x) between x=0 and x=2.
Find the equation of the tangent to the curve y = (5x+4)/(3x-8) at the point (2, -7).
A curve has the equation: x^2(4+y) - 2y^2 = 0 Find an expression for dy/dx in terms of x and y.