Recent content by nejnadusho

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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    so are not these values actually the domain of the original function?
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    ohhh really? sooo for f((3*Pi)/2) = -1 and f(Pi/2) = 3 but why all that why I take the values from the derivative and substitute them in the original equation?
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    Yes but isn't the coresponding values of y allways the same? are not they always y= 0 for cos and y = -1 for sin ? I mean for this problem.?
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    Thank you very much for the way you helped me. Thank you very much guys.
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    I am dum I stay I am doing something and I cannot realize that I just solve the problem.
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    Pi/2 for cosx and ((3*Pi)/2) for sin
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    ok but how am I suppose to solve it for x now?
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    ok f'(x)= 2cos x (sin x + 1) 2cos x (sin x + 1) = 0
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    So if I substitute x by 0 I am going to find the point where the slope of the tangent line is 0 ? But I am going to find only one y for each x so how am I suppose to find more than one zero slope if there is?
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    Actually I got lost again because I found the derivative but How am I suppose to find the equation of the tangent line when I do not have a certain point. Do I need it actually? I mean some point? So if I substitute x by 0 I am going to find the point where the slope of the tangent line...
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    Ok I am sorry there was something wrong and I could not open the page yestarday. I guess I should find the derivative of the f(x) which means I should find f'(x) and after the equation of the tangent line . right? And i guess the slope is horizontal when the f(x) of the slope equals ohhh...
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    How Do You Find Points with Horizontal Tangents on f(x) = 2sinx + (sinx)^2?

    Homework Statement Find all points on the graph of the function at which the tangent line is horizontal. f(x) = 2sinx + (sinx)^2 Homework Equations Hi guys I have an issue. I do not know how to approach this problem. I know the chain rule but I still do not know how to solve the...
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    Limit problem. Chapter :Precise definition

    Not really.
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    Limit problem. Chapter :Precise definition

    Homework Statement Find the limit lim x\rightarrow1 (4+x-3(x^3) = 2 find the values of \delta that correspond to \epsilon=1 and \epsilon = 0.1 Homework Equations The Attempt at a Solution As much as I know I should do like this. |(4 + x - 3(x^3)) - 2| < 1...
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    Limit of Fraction: x→1 (sqrt(x)−x2)/(1−sqrt(x))

    Yes thanks