Secant is 1 over cosine and cosine 0 equals 1.
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1. Any number to the power of 0 is 1.
Assuming that 4x2+2x = 0: 2x (2x+1) = 0 2x = 0 or 2x+1 = 0 x = 0 or -1/2
The period is the length of x over which the equation repeats itself. In this case, y=sin x delivers y=0 at x=0 at a gradient of 1. y next equals 0 when x equals pi, but at this point the gradient is minus 1. y next equals 0 when x equals 2pi, and at this point the gradient is 1 again. Therefore the period of y=sinx is 2pi.
x = 1, y = 0
2x2+1x-3=0 4+x-3=0 x+1+0 x=-1 is your final answer