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Given: y=4 x⁵-{2}{x⁷}+16 x⁶/⁵-11 - Find y(2) =

User Seungjun
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1 Answer

5 votes

Final Answer:

y(2) = 32 - 2 - 32/5 - 11 = -19.6

Step-by-step explanation:

To find the value of y(2), substitute x = 2 into the equation y = 4x⁵ - (2/x⁷) + 16x⁶/⁵ - 11.

Start by evaluating each term separately after substituting x = 2:

4x⁵ = 4 * (2⁵) = 4 * 32 = 128.

2/x⁷ = 2/(2⁷) = 2/128 = 1/64.

16x⁶/⁵ = 16 * (2^(6/5)) = 16 * 2.297 = 36.752 (approximated to 36.75 for simplicity).

Finally, 11 remains unchanged.

Now, substitute these values into the equation

y = 4x⁵ - (2/x⁷) + 16x⁶/⁵ - 11:

y(2) = 128 - 1/64 + 36.75 - 11

y(2)= 127.984375 - 0.015625 + 36.75 - 11

y(2)= 127.96875 + 25.75 - 11 = 152.71875 - 11 = -19.6.

This method of substitution and evaluation is fundamental in solving equations and understanding how variables impact the resulting output. It provides a systematic way to calculate specific values or points of interest within mathematical models, enabling a deeper comprehension of their behavior and characteristics across different input values.

User Leng Weh Seng
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