Is #f(x)= cos(3x+(5pi)/4) # increasing or decreasing at #x=-pi/4 #?

Related questions

• How do you know a function is increasing?
• What is the meaning of monotonically increasing function?
• How do you find all intervals where the function #f(x)=1/3x^3+3/2x^2+2# is increasing?
• How do you find all intervals where the function #f(x)=e^(x^2)# is increasing?
• What is the derivative graph of a parabola?
• If #f(x) = 2x^3 + 3x^2 - 180x#, how do I find the intervals on which f is increasing and decreasing?
• Suppose that I don't have a formula for #g(x)# but I know that #g(1) = 3# and #g'(x) =...
• What information does the first derivative tell you?
• How do you find the interval in which the function #f(x)=2x^3 + 3x^2+180x# is increasing or decreasing?
• How do you find values of t in which the speed of the particle is increasing if he position of a...