Hi,

Can someone show me how to answer the following graphically

H3 + 87.48h - 305.73 = 0

Solving for h

Thanks....mark

2. Originally Posted by manich44
Hi,

Can someone show me how to answer the following graphically

H3 + 87.48h - 305.73 = 0

Solving for h

Thanks....mark
1. I assume that you mean

$H^3+87.48H-305.73=0$

2. I assume that you are asked to solve this equation graphically(?).

3. If so: Draw the graph of the function

$y = x^3+87.48x-305.73$

and determine the coordinates of the x-intercept. The x-coordinate is the solution of the given equation. (The y-coordinate of the x-intercept must be zero!)

4. For confirmation only: My TI-84 has an output of x = 3.1407146

3. Originally Posted by manich44
Hi,

Can someone show me how to answer the following graphically

H3 + 87.48h - 305.73 = 0

Solving for h

Thanks....mark
Hi manich44,

You might try the Cubic Formula. I cheated and used a graphing calculator.

Only 1 real zero at 3.1407146

4. Originally Posted by earboth
1. I assume that you mean

$H^3+87.48H-305.73=0$

2. I assume that you are asked to solve this equation graphically(?).

3. If so: Draw the graph of the function

$y = x^3+87.48x-305.73$

and determine the coordinates of the x-intercept. The x-coordinate is the solution of the given equation. (The y-coordinate of the x-intercept must be zero!)

4. For confirmation only: My TI-84 has an output of x = 3.1407146
How do I enter that into a graphing calculator.Can you show me an example.

Thanks

5. Originally Posted by manich44
How do I enter that into a graphing calculator.Can you show me an example.

Thanks
What kind of graphing calculator do you have?