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MATHS URGENT
By making the substitution u =ln x show that the following equation has exactly one realnumber solution: 9/ln x + ln x^4 =12
asked by Please help me! on October 28, 2016 
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By making the substitution u =ln x show that the following equation has exactly one realnumber solution: 12/ln x +ln x^4 = 9
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By making the substitution u=ln x show that the following equation has exactly one realnumber solution: 12/ln x + ln x^4 = 9
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By making the substitution u =ln x show that the following equation has exactly one realnumber solution: 9/ln x + ln x^4 =12 Sorry wrote the incorrect equation previously!
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Consider the equation 4x^2 – 16x + 25 = 0. (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one realnumber solution, two different realnumber solutions, or two different imaginarynumber
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Consider the equation: 4x^2 – 16x + 25 = 0 (a) Show how to compute the discriminant, b^2 – 4ac, and then state whether there is one realnumber solution, two different realnumber solutions, or two different imaginarynumber
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(a) Let u=7^x. Using the rules for powers show that i) 7^x1 = u/7 and ii) 7^2x1 = u^2/7 (b) By making the substitution u=7^x and using part (a), derive a hidden quadratic equation 7^2x1 +4×7^x1  1/14 = 0 and hence find all
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By making the substitution u=7^x and using part a, derive a hidden quadratic equation 7^(2x1) +4×7^(x1) 1/14 =0 and hence find all of the solutions to the above equation.
asked by Please help me! on October 28, 2016